Question

Find the exact value. If the expression is undefined, write undefined.

cot 45 degrees

Answer 1

cot 45 degrees = 1 think of a triangle in a unit circle that is 90-45-45. The legs are both 1, hypotenuse is radical 2. Divide opposite by adjacent. That is 1. Cotangent is the inverse, which is 1.

Answer 2

thanks :)