Question

17. Prove that 17. Prove that sin too V3 cos 10° = 4. 4 sin 10°

SSC CGL

Maths

Solution

128

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AUGUST 2018 / SEPTEMBER 2018 31 Friday ( operatorname{Proven}_{sin 10^{circ}}-frac{sqrt{3}-4}{cos 10^{circ}}=4 ) ( sin (alpha-beta)]_{20}=frac{4}{sin 20^{circ}} ldots ldots ldots ldots ) ( y-4 frac{sin left(30^{circ}-10^{circ}right)}{sin 20^{circ}} ldots ldots ldots ldots ) ( =frac{4 sin 20^{circ}}{sin 20^{circ}} ) begin{tabular}{c} ( =sqrt{4} ) hline 3 Monday - Gopal Kala ( = ) RHS. end{tabular} Hence Proved