Question

If   Sin   2A    =   Cos   (A   -   27˚)   ,   where   2A   is   acute   angle ,   then   find   the   measure   of  

Answer 1

Answer:

Hello!

Sin2A=Cos(A-27)

Sin2A= Sin(90-(A-27))

Sin2A=Sin(117-A)

2A=117-A

3A=117

A=117/3

A=39

Hope it helps you :)

Peace