`sin(A+B)=sinA cos B +cos A sin B`

sin(A-B)=sinA cos B-cosA sinB

Taking A = 60^(@) and B=30^(@) verify that sin (A-B) = sin A cos B - cos A sin B .

In Delta ABC right angled at B if tan A = (1 ) /(sqrt 3 ) then find the value of : (i) sin A cos C + cos A sinC (ii) Cos A cos C - sin A sinC

Prove that : (a) (sintheta+costheta)^(2)=1+2sin thetacostheta (b)Sin A cos A tan A+cos A sin A cot A=1

In a right angle triangle ABC, right angle is at B ,If tan A=1/sqrt(3) , then find the value of (i) sin A cos C+ cos A sin C " "(ii) cos A cos C -sin A sin C

If |[cos(A+B), -sin (A+B), cos 2B],[sinA,cosA,sinB],[-cosA,sin A,cos B]|=0 then B=

If sin A = sin B, cos A = cos B, then the value of A in terms of B is

Is it right to say that sin (A+B) =sin A +sin B ? Justify your answer.

State True or False and Justify sin ( A + B ) = sin A + sin B

cos(A-B)=cosAcosB+sinA sinB