Without using a calculator, give the exact trigonometric function value with rational denominator.
-$\cot 45 ^ { \circ }$
A) $\frac { 2 \sqrt { 3 } } { 3 }$
B) 1
C) $\frac { 1 } { 2 }$
D) $\sqrt { 2 }$

Question

Quizplus · Accepted Answer

The cotangent of 45 degrees is equal to 1 because $\cot 45^\circ = \frac{1}{\tan 45^\circ}$, and $\tan 45^\circ = 1$.

Without Using a Calculator, Give the Exact Trigonometric Function Value cot⁡45∘\cot 45 ^ { \circ }cot45∘

Without Using a Calculator, Give the Exact Trigonometric Function Value $\cot 45 ^ { \circ }$