Home
Class 12
MATHS
Show by vector method that sin 2A=2sin A...

Show by vector method that `sin 2A=2sin A cosA`.

Promotional Banner

Similar Questions

Explore conceptually related problems

Show by vector method that sin(alpha-beta)=sinalphacosbeta-cosalpha sinbeta.

Show by vector method that sin(alpha-beta)=sinalphacosbeta-cosalpha sinbeta.

sin A=1/2, cosA=?

Using cross product of vectors , prove that sin (A+B)=sin A cosB + cosA sin B .

If cosA=sqrt3/2 then sin 2A=

Prove that (sin^2A)/(cosA) + cos A = sec A.

If A+B+C=(pi)/(2) ,prove that: sin 2A+"sin" 2B+"sin" 2C=4 cosA cos B cos C.

If A+B+C=pi/2 , prove that: sin2A + sin2B+sin2C = 4cosA cosB cosC

If A+B+C=pi/2 , prove that: sin2A + sin2B+sin2C = 4cosA cosB cosC

If A=30^(@) , show that : (1+sin2A+cos2A)/(sinA+cosA)=2cosA .