Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • School
  • Find the value of cos A if sin 2A = 2 sin A

Find the value of cos A if sin 2A = 2 sin A

Answers (1)

\sin \: 2A=2\: \sin A ...(i)
As we know \sin 2A = 2\sin A \cos A ....(ii)
By equation (i) nad equation (ii)

2\sin A \cos A = 2\sin A
\\\cos A = 1\\

Posted by

Ravindra Pindel

View full answer

Similar Questions

Latest Question