Answers created by Swarna Islam

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• Can someone verify this? (cotx-1)/(cotx+1) = (1-sin2x)/(cos2x)
  
• Sin420°+Cos390°-Cos(-300°)Sin(-330°) Solve And Answer Value?
  
• Can someone help verify this trig identity? (Sinx+cosx)^2/sin^2x-cos^2x=sin^2x-cos^2x/(sinx-cosx)^2
  
• Prove #tan^-1 (cot (theta)) /2 = pi/4 + theta/2#?
  
• Fint the value of #Sin theta + Cos theta# ?
  
• How to prove?
  
• Question #70f00
  
• How do you find the domain and range of #f(x)=-4+sqrt(x+3)#?
  
• If tanA+sinA=p and tanA-sinA=q. Then proove that #p^2-q^2=4sqrt (pq)# ?
  
• If #8 L# of a gas at room temperature exerts a pressure of #32 kPa# on its container, what pressure will the gas exert if it the container's volume changes to #4 L#?
  
• Question #c4eca
  
• How do you simplify #(4/(7y-2)+(7y)/(2-7y))((y+5)/6-(y+3)/6)#?
  
• How do you find the domain and range of #f(x)=sqrt (x+7)/(x^2+7)#?
  
• Question #b18b1
  
• Question #786a6
  
• Question #efef9
  
• If #x# and #y# are acute angles and #sin(2x-20^@)=cos(2y+20^@)#, what is #tan(x+y)#?
  
• How do you determine #tantheta# given #costheta=1/8, (3pi)/2<theta<2pi#?
  
• How do you solve the following system?: #9x +12y = 7 , -2x - 21y = -41#
  
• How do you solve the system of equations #2x + 5y = - 8# and #4+ y = - 12#?
  
• Prove that tan(A+B)*tan(A-B)=cos²B-cos²A/cos²B-sin²A?
  
• Question #74225
  
• Question #2144a
  
• A projectile is shot from the ground at a velocity of #15 m/s# at an angle of #pi/6#. How long will it take for the projectile to land?
  
• Question #4db2c
  
• Question #a4c27
  
• Question #703cc
  
• Question #50761
  
• Question #e7dd8
  
• Question #6b51b