Evaluate : 3 A+2 4 A 3 A+2 4 A , when A=15^ . - Vidyadip

Question

Evaluate : $\frac{\cos 3 A+2 \cos 4 A}{\sin 3 A+2 \sin 4 A}$, when $A=15^{\circ}$.

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Answer

$\left(\frac{1+\sqrt{2}}{1+\sqrt{6}}\right)$

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