Questions asked by Iqbalkanzo

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• Cos (67°) sin (68°) + cos (23°) sin (22°) equal ?
  
• Cos^4 (50°) - cos^4 (40°) equal ?
  
• How to prove sin^2 (A)*cos^2 (A) = 1/8 (1-cos (4A)) ?
  
• Why does plants store food reserve in the root in the form of amylum instead of glucose?
  
• Cos(20°)cos(40°)cos(80°) = ?
  
• How to change the form: cos(3x-30°)+cos(3x+60°) into the form: k cos(x-theta)?
  
• #Sin(40°)+cos(50°)+sin(80°)-cos(190°) =# ?
  
• (cos(80°)-cos(40°))/sin(40°) = ?
  
• If cos(x)cos(x-(Π/3))=1-(n/6), then the constraint of the value n that satisfies ?
  
• (sin(10°)+sin(20°)+sin(40°)+sin(50°))/(cos(10°)+cos(20°)+cos(40°)+cos(50°)) = ?
  
• How to prove that cos (80°)+cos(40°)-cos(20°)=0 ?
  
• How to prove that sin(22,5°)cos(22,5°)-cos^2(22,5°)=-(1/2) ?
  
• How C₂H₂(g)+(5/2)O₂(g) could be 2CO₂(g)+H₂O(g) ?
  
• What is #{sin10°+sin20°}/{cos10°+cos20°} =# ?
  
• How to prove (cos80°-cos40°)/sin40°=((√3)/2)sec20° ?
  
• If #cos(x)cos(x-60°)=1-(n/6)#, so n = ?
  
• Prove cos(x)+cos(2x)+cos(3x)=cos(2x)(1+2cos(x)) ?
  
• If #cos (x) cos (x - pi/3) = 1 - n/6, then the boundary value "n" that meets is = ?
  
• Find the value of "x" that satisfies the equation : √3 sin 2x + cos 2x = √3 ; 0°<= x <= 90° ?
  
• If #0 < x < phi# , prove that : #sin (x/2) = sqrt((1-cos x)/2)# ?
  
• The value of "x" that satisfies sec (x + 20°) = 2 ?
  
• If x^2-(3a+b)x+6ab-2b^2=0 and a-b=3, so the value of "x" ?
  
• If #a# and #b# are integers such that #(1/sqrt(2017))# is the solution of the quadratic equation #x^2+ax+b=0#, then #a+b# ?
  
• If #2016x^2+2017x+1=0# produces values #​​x_1 and x_2 and x_1>x_2#, then #63(x_1/x_2)#= ?
  
• Explain three differentiations of parenchymal tissue?
  
• The circle with the equation x² + y²-4x-6 = 0 is translated by [2, -3]. The result is a circle centered on ...?
  
• The parabola (y-3)² = 4(x-2) is translated by [1, 2], producing a parabola with a peak point ...?
  
• If #x^2-(3a+b)x+6ab-2b^2=0# and #a-b=3#, so the value of #a# and #b# ?
  
• Sin^8(75°)-cos^8(75°) ?
  
• If x1 and x2 satisfy: 2sin(x)+sec(x)-2tan(x)-1=0, then sin(x1+x2)?
  
• If sec(x)+tan(x)=2012, then 2011(csc(x)+cot(x))?
  
• Does poem always have rhyme? Explain?
  
• What makes a good poem?
  
• A is the translation expressed by matrix[3_4]. B is the translation expressed by matrix[-2_1]. And P is the point (-1, -2). Thus: (B○A○B○A○B)(P)= ?
  
• Do you think simile is similar as metaphor? Why?
  
• What is poem organized into?
  
• What is a simile in poem?
  
• What are the elements of the poem?
  
• How to prove that √3 is an irrational number ?
  
• Prove that for any integer A is valid: If A^2 is a multiple of 2, then A is also a multiple of 2 ?
  
• Prove indirectly, if n^2 is an odd number and n is an integer, then n is an odd number?
  
• Given A, B, and C are members of the set of real numbers. Prove indirectly that, if A<B and B<C, then A<C?
  
• Water flows on a pipe whose diameters are different ends with a 1:3 ratio. If the water velocity that flows on the large pipe portion is 20 ms^(-1), the velocity of the water in the small pipe is ?
  
• Given the NH3 change reaction equation: N2 + 3H2 → 2NH3 Determine the ratio of reaction rates N2, H2, and NH3?
  
• Determine the equation of a circle centered at (0, 0) and through the point of cutting the line 3x + 4y = 24 with the x axis?
  
• How can I easily remember regular and irregular verbs?
  
• The center point of a circle coincides with the vertex point of parabola y = x^2 - 4x + 5. Determine the circle equation when the circle passes the point of parabola with the y-axis?
  
• The equation of a circle whose diameter is the line connecting the points (1, 5) and (9, 1) is?
  
• A point A moves so that its distance to (0, 0) is always equal to twice its distance to the point (3, 0). The equation of the circle is?
  
• In reaction: 2H₂O(g)⇌2H₂(g)+O₂(g); ∆H=+242 kJ/mol In which direction the equilibrium shifts, if: a. Temperature is increased? b. Temperature is descreased? c. H₂ is added? d. O₂ is reduced? e. Pressure is enlarged?
  
• On the hydrolysis of esters according to the reaction: HCOO⁻(aq)+H₂O(l)⇌HCOOH(aq)+OH⁻(aq) To which the equilibrium will shift, if at a fixed temperature: a. Be deluted (water is added)? b. NaOH is added? c. Pressure is enlarged?
  
• In the Haber process, Ammonia is produced according to the equation N₂ (g) + 3H₂ (g) → 2NH₃ (g). The relationship between the rate of N₂ reduction to the rate of NH₃ formation is?
  
• A 200 mL glass containing 198 mL of water at 30°C. The expansion coefficient of volume is 4,4 x #10^(-4)#°C. If the glass and water are heated, the water will expand and spill at what temperature?
  
• #cot765^@ = #? #sec765^@ = #? #csc765^@ = #?
  
• In triangle ABC given: #cos(A)=sqrt(2)//2# and #cos(B)=sqrt(3)//2#. Then, #cos(C)=#?
  
• If #cos^(2)20^@-sin^(2)20^@=p# then #sin80^@=#?
  
• If #sinalpha-cosalpha=p#, then #sin2alpha=#?
  
• If #3sinx+5cosx=4, then #(3cosx-5sinx)^(2)=#?
  
• #2sin3alphacosalpha#?
  
• What is the best slogan about English Club?
  
• Can you explain about Conditional Sentence Type 3 along with example?
  
• What is different between "If I were you" with "If I had been you"?
  
• 1 + 3 + 9 + 27 + ... + 729?
  
• How to make Procedure Text?
  
• #log(2)+log(2/3)+log(2/3^2)+log(2/3^3)+...#. The sum of the first 10 terms equals?
  
• #((n+1)/n)+((n+3)/n)+((n+5)/n)+...#. The sum of the first 10 terms equals?
  
• #(1+3+5+...+(2n-1))/(2+4+6+...+2n) = 115/116#. The value of n that satisfies is?
  
• Given point A (a, b), B (-a, -b) and curve C lie in the xOy plane. Point P moves along the curve C. If the product of the gradient of the PA line and the PB gradient line is always equal to the k constant, then C is a circle if k?
  
• If the equality of the sides of the square ABCD is x+y=1, x+y=2, x-y=0, x-y=1, then the circle through the corner points ABCD has a radius of...?
  
• The small circle has equation #x^(2)+y^(2)-2x-4y-4=0#. The great circle equation have the same radius with the diameter of the small circle is ...?
  
• Which of the following sentences correspond to grammar? 1. I will continue to strive to attain the ideals of. 2. I will continue to struggle to achieve my goals. 3. I will continue to struggle to reach goals.
  
• A line of geometry, the 3rd term is #a^(-4)# and the 4th term is #a^x#. The 10th term is #a^(52)#, then, x is?
  
• On a geometry sequence, total the 4th and the 6th terms equals 30. While the 3rd term equals 3. The 8th term equals?
  
• Length #AC+C C_1+C_1C_2+C_2C_3+C_3C_4+...=?#
  
• The point (p, q) lies in the circle x^2 + y^2 = 289 and at the line y = 15. The value of P that satisfies is?
  
• #x^3+x-10=0#? In detail, please
  
• #341 = (1(1-x^(-5)))/(1-x^(-1))#, solve for #x#?
  
• You have a #"500-mL"# #"HCl"# solution having #"pH" = 3#. Determine the amount of #"NaOH"# solid #("M"_M = "40 g/mol")# that must be added so that the #"pH"# of the solution is changed to #10# ?
  
• How to determine the pH of the following mixture and the amount of salt formed?
  
• How to solve?
  
• How #H_2SO4+NaOH# could be #Na_2SO4+H_2O# and how to balance it?
  
• Find the equation of the circle centered at the point (2, 3) and touching the line 5x+12y-7=0?
  
• #2NH3 rightleftharpoons (NH_4)^+ + (NH_2)^-#. #(NH_2)^-# acts as?
  
• Are factual report and report text same?
  
• What is the difference between factual report and descriptive text?
  
• Explain the difference in the process of respiration in birds when flying and when not flying?
  
• How to change these sentences to active voice?
  
• Strengthen these sentences by removing the fillers it and there, and rewrite the sentences to emphasize the logical subjects and verbs. If the passive voice has snuck back in, eliminate it. How?
  
• #lim_(x->1) ((1-sqrt(2-x))/(x-1))#?
  
• #lim_(x->oo) (2x^2+2x+3)/(x^3+x^2+1)#?
  
• The higher the site, the less Oxygen content. In your opinion, is there a change in the respiratory mechanism that occurs with respect to it?
  
• Why when exhaling in the morning or in cold weather, our breath looks like smoke? explain the respiratory mechanism that occurs with respect to it?
  
• If #sqrt(n+sqrt(n+sqrt(n+sqrt(n+sqrt(...)))))=3#, so n=?
  
• #lim_(x->oo) sqrt(25x^2-9x-6)-5x+3# ?
  
• #lim_(x->oo) (sqrt(3x-5)+sqrt(2x+7))#?
  
• Why #lim_(x->oo) (sqrt(4x^2+x-1)-sqrt(x^2-7x+3)) = lim_(x->oo) (3x^2+8x-4)/(2x+...+x+...)=oo#?
  
• Intersection of equation of circle x²+y²-2x-6y+1=0 and x²+y²-10x-12y+47=0?
  
• Prove it indirectly, if #n^2# is an odd number and #n# is an integer, then #n# is an odd number?
  
• Why when someone moves from light to dark place he experiences a "momentary blind" condition?
  
• How to define a, b, c, d, e that are integer between 1-9 so that matrix is a symmetry matrix?
  
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