Evaluate, Class 10 Maths Introduction to Trigonometry questions with solutions

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Solution

Q.
Evaluate: $2 \sqrt{2} \cos 45 ° \sin 30 ° + 2 \sqrt{3} \cos 30 °$

Ans.
(4)

$2 \sqrt{2} \cos 45 ° \sin 30 ° + 2 \sqrt{3} \cos 30 °$

$= 2 \sqrt{2} \times \frac{1}{\sqrt{2}} \times \frac{1}{2} + 2 \sqrt{3} \times \frac{\sqrt{3}}{2} = 1 + 3 = 4$

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