Question

A. undefined B. 0 C. 1 D. -1

Answer 1

The answer is D.) 0

Explanation:

JUST DID THE QU

Answer 2

0

Explanation:

Zero .

Cot = 1/tan ∅

But tan ∅= cos∅ / sin ∅

so if ∅/90 then cos 90/ sin 90 x π/2 should be 0