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

Question

Quizplus · Accepted Answer

The tangent of 45 degrees is equal to 1 because in a right-angled isosceles triangle, the opposite and adjacent sides are equal, making the ratio of opposite to adjacent (which defines tangent) equal to 1.

Without Using a Calculator, Give the Exact Trigonometric Function Value tan⁡45∘\tan 45 ^ { \circ }tan45∘

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