Question

1. Evaluate :
sin 18 o
cos 72
​

Answer 1

hey

sin(90-18)cos72

cos72*cos72

cossquare72

Answer 2

Answer:1

Step-by-step explanation:

Q. Sin 18/Cos 72 (Note:I think you have made some mistake in writing the question check it out though I made it correct)

Sin 18/Cos 72

=Sin 18/Cos(90-18)

=Sin18/Sin18 ◆Applying 90-theta formula

=1