Evaluate -sin 18-cos 72-

Sin 18^∘/cos 72^∘ sin ( 90^∘ 72^∘)/cos 72^∘ cos 72^∘/cos 72^∘ = 1 (As, sin (90^∘ A) = cos A) ...

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Values of Trigonometric Ratios

Evaluate :sin...

Question

Evaluate :
$\frac{s i n 18^{\circ}}{c o s 72^{\circ}} =$ ___

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Solution

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Evaluate :
$\frac{s i n 18^{\circ}}{c o s 72^{\circ}}$ ___

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