Question

If cos thita=1/2,sin thita =1/2,find thita +thita​

Answer 1

☆Answer☆

Given:-

• Cos ϴ = 1/2

• Sin ϴ = 1/2

To Find:- ϴ+ϴ = ?

Solution:-

Cos ϴ = 1/2

Cos ϴ = Cos 60°

ϴ = 60°

Sin ϴ = 1/2

Sin ϴ = Sin 30°

ϴ = 30°

ϴ+ϴ = 60°+30°

=> 90°

✔

Answer 2

if cos thita =-1/2

π<thita<3π/2