Question

if sin 3A equals to cos bracket a minus 36 bracket close then find a

Answer 1

Sin3A=cos36=sin54
3A=54 then A=18

Answer 2

Answer:

sin3A = cos( A - 26)

=> cos(90 - 3A ) = cos( A - 26)

=> 90 - 3A = A - 26

=> 90 + 26 = A + 3A

=> 116 = 4A

=> A = 39 °. thé value of A is 39°.