If 4 2 45° - 2 60° + 2 60° + p = 3/4 , then find the value of p.

CBSE Class 10 Maths PYQ · Trigonometry · Specific Angles Expression · 2 Marks · March 2023 · Standard

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422 Marks · March 2023 · Standard
If $4 \cot^2 45^\circ - \sec^2 60^\circ + \sin^2 60^\circ + p = \frac{3}{4}$, then find the value of p.
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$4 \cot^2 45^\circ - \sec^2 60^\circ + \sin^2 60^\circ + p = \frac{3}{4}$
$\Rightarrow 4(1)^2 - (2)^2 + (\frac{\sqrt{3}}{2})^2 + p = \frac{3}{4}$
$\Rightarrow 4 - 4 + \frac{3}{4} + p = \frac{3}{4}$
$\Rightarrow p = 0$
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