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In a maths quiz at a Delhi school, Arjun is asked to prove that
(1 + ta $n^{2}$ A) co $s^{2}$ A simplifies to a constant.
What is that constant value?

Class 10Trigonometric IdentitiesTrigonometry

A1
B2
C3
D0

Step-by-Step Solution

(1 + ta

n^{2}

A) = se

c^{2} A = \frac{1}{c o s ^{2} A}

. Multiplying by co

s^{2}

A gives

\frac{1}{c o s ^{2} A} \cdot cos^{2} A = 1

.

Answer: A) 1

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