Question

1+ cos 60°
1 - cos 60°​

Answer 1

We know that cos 60° is 1/2

Now,

1+cos60°=1+1/2 i.e 1.5

Again,

1-cos60°=1-1/2 i.e 0.5

Hope this will help you.

Answer 2

Step-by-step explanation:

1) 1 + cos 60°

⇒1 + cos ( 90°-30°)

⇒1 + sin 30°

⇒1 + $\frac{1}{2}$

⇒$\frac{3}{2}$

2) 1 - cos 60°

⇒1 - cos ( 90°-30°)

⇒1 - sin 30°

⇒1 - $\frac{1}{2}$

⇒$\frac{1}{2}$

$<marquee>Hope this helps you$