Questions asked by Prashant S.
- Back to user's profile
-
2(sin^6A+cos^6A)-3(sin^4A+cos^4A)=-1?
-
Solute seperates as a solid when a saturated solution is cooled. Why ?
-
Concentrated sulphuric acid should not be used while preparing hydrogen gas in laboratory. Why ?
-
Temporary hardness of water can be removed by using calcium hydroxide. How ?
-
Why are fossils are taken as the strongest evidence obtained so far regarding the evolution of organisms ? Give reason
-
Which compound will form by the combination of oxygen and neon ? Also say the type of bond.
-
How do you prove?
Sec^4A-sec^2A = tan^4A+tan^2
-
How do you factorize? 3tan^2A+2tanA-8
-
How do you prove? Sin^3A+cos^3 = (sinA+cosA) (1-SinA*cosA)
-
How to find the product of (sinA-cosA)*(sin^2A+sinA*cosA+cos^2A) ?
-
The radius of a circle is 21cm. An arc of the circle subtends an angle of 60@ at centre. Find the length of the arc?
-
If 6sinA + 8cosA = 10 , how to prove that TanA = 3/4 ?
-
Find the coordinate of the point on x-axis which is at a distance of 5 units from the point (2,-3)?
-
The midpoint of the line joining (a,2) and (3,6) is (2,b). Find the values of a and b?
-
How to prove that : 1-cos^4A/sin^4A= 1 + 2cot^2A?
-
How to find the vertices of the image of deltaPQR having vertices P(-1, 2), Q(-3, 5) & R(0, 4) under the enlargement with scale factor -2 & centre at origin ?
-
The vertices of a triangle ABC are A(-6, 3) , B(-3,5) & C(4,-2) . If the co-ordinate of P are (x,y) . How to prove that PBC/ABC = x+y-2/5 ?
-
How to find the area of triangle whose vertices are (3,-1),(2,7) and (-5,6) ?
-
Find the vertices of the image of triangle PQR having the vertices P(-1,2) Q(-3,5) and R(0,4) under the enlargement with scale factor -2 and centre at origin?
-
What are three conditions required by the sun to produce enormous energy?
-
Which principle does hydraulic obey?
-
Factorise : a^4 + a^2 b^2 + b^4?
-
How to solve : (px^2-4+5x)/(p^3x-x^2) = 1 ?
-
Find the sub-duplicate ratio of 9:16 ?
-
Solve : (3y-8)/(5y-2) = (y-2)/(y+5) ?
-
How to Solve bu using elimination method ?
-
How to prove ?
-
What amount of heat is required to raise the temperature of 30 kg water when it is heated from 20^@ C to 37^@ C ?
-
Earthing is done only in the outer part of the electric appliances. What is the reason?
-
If a transformer consist of 770 turns in primary coil with 220 primary voltage produces 110 secondary voltage, then calculate the number of turns in secondary coil?
-
What mass of steam at 100^@ C must be mixed with 150 g of ice at its melting point, in a thermally insulated container to produce water of 50^@ C?
-
What happens to the force of attraction when:
1. Distance is doubled
2. Masses are doubled
3. Distance is reduced by half ?
-
Give reason ?
-
Find the value ?
sin105^@ + cos105^@
-
Find the value?
(Tan85^@ - Tan25^@)/(1+Tan85^@Tan25^@)
-
Prove that?
cot 15^@ = 2+ sqrt3
-
Find the value of?
tan15^@+cot15^@
-
If tan theta = 5/6 and tan phi= 1/11 then find tan (theta + phi) hence show that (theta + phi) = (pie)/4 ?
-
In the given figure of hydraulic press, if the cross section area of cylinder 'A' and 'B' are 0.5 m^2 and 10 m^2 respectively, what magnitude of effort is to be applied on cylinder 'A' to balance the load of 1000N on cylinder 'B' ?
-
Change into passive voice?
-> We must go into this matter.
-
Differentiate between alkane, alkyne, alkene and alkyl ? Give at least 3 major differences of them.