A. If , then find the value of . b. OR…

MATHEMATICS · Subjective · CBSE · Mathematics · Introduction to Trigonometry · Introduction to Trigonometry

Problem

21. a. If xcos⁡60∘+ycos⁡0∘+sin⁡30∘−cot⁡45∘=5x \cos 60^\circ + y \cos 0^\circ + \sin 30^\circ - \cot 45^\circ = 5, then find the value of x+2yx + 2y. b. OR Evaluate: tan⁡260∘sin⁡260∘+cos⁡260∘\frac{\tan^2 60^\circ}{\sin^2 60^\circ + \cos^2 60^\circ}

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