Question

pls solve the question in the photo​

Answer 1

Step-by-step explanation:

i) sin²∅=3/4

sin∅= √¾

sin∅= √3/2

sin∅= sin60°

∅= 60°

ii) cos3∅= 1/2

cos3∅= cos 60°

3∅= 60°

∅= 20°

.....666....