Question

If sin 4A/sin 5A = tan 4A, then A =​

Answer 1

i .m sry yr ajj mera paper aw

Answer 2

Sin 5A =cos 4A

we know sin (90-@) =cos@

use this

sin 5A = sin (90-4A)

5A = 90 -4A

9A = 90

A= 10