Question

How do you solve `cos θ = 1/2`?

Answer 1

The two minimum values of angle, `theta` are `60°` & `300°`.

Explanation:

Given that, `costheta=1/2`.
But, it is known that, `cos60°=1/2`.

Also, `cos300°=1/2`.

`:.theta=60°` & `theta=300°`.
So, `theta` has lots of values for which their cosine function is `1/2`.

But, the two least values of `theta` are `60°` & `300°`.