wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

Prove:
sin(2A+B)sinA2cos(A+B)=sinBsinA

Open in App
Solution

LHS=sin(2A+B)sinA2cos(A+B)=(sin2AcosB+cos2AsinB)sinA2sinA(cosAcosBsinAsinB)sinA=2sinAcosAcosB+(12sin2A)sinBsinA2sinAcosAcosB2sin2AsinBsinA=sinBsinA=RHS

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Compound Angles
MATHEMATICS
Watch in App
Join BYJU'S Learning Program
CrossIcon