If x \cos 60° + y \cos 0° + \sin 30° - \cot 45° = 5, then find the value of x + 2y.... | VSA 2m | Maths | SuperPadhai

Introduction To Trigonometry > Question

VSA2 marksYear: 2025EasyCBSE Class 10

trigonometrytrigonometric-ratiosstandard-angles

Question

If

x cos 60° + y cos 0° + sin 30° - cot 45° = 5

, then find the value of

x + 2 y

.

Solution

1

x (\frac{1}{2}) + y (1) + \frac{1}{2} - 1 = 5 \Rightarrow \frac{x}{2} + y - \frac{1}{2} = 5 \Rightarrow \frac{x}{2} + y = \frac{11}{2}

+1.5 marks

2

\Rightarrow x + 2 y = 11

+0.5 marks

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