Question

What’s the cot(180°) + (cos(180°)/sin(180°))

Answer 1

the answer is 'undefined'

Explanation:

Cot is defines as (cos x)/(sin x)

So we can rewrite our expression as...

(cos 180°)/(sin 180°) + (cos 180°)/(sin 180°)

or

2(cos 180°)/(sin 180°)

Cos 180° = 1, sin 180° = 0 (you get these from the unit circle)

so we have

2(1/0) = 2/0, which is undefined, because we don't divide by zero