Question

Evaluate: \dfrac{\cot 57^\circ \,\cdot \,\tan 60^\circ }{\tan 33^\circ \,\cdot \,\cot 60^\circ }+\dfrac{{{\cot }^{2}}26^\circ }{{{\tan }^{2}}64^\circ } tan33 ∘ ⋅cot60 ∘ cot57 ∘ ⋅tan60 ∘ ​ + tan 2 64 ∘ cot 2 26 ∘ ​

Answer 1

Step-by-step explanation:

There exists 4 trigonometric quadrants. All, Sine, Tan & Cos . 570 degrees turns out to land in the tan quadrant, therefore cos(570) has to be negative.