Prove that: \frac{(1+ \sin \theta)^2+(1- \sin \theta)^2}{2 \cos ^2 \theta}= \sec ^2 \theta+\tan ^2 \theta

ICSE Class X Math 2022 Solved Paper - Question 25

Question : 25 of 30

Marks: +1, -0

Prove that:

\;{(1+ sin \;θ)^2+(1- sin \;θ)^2}/{2 \cos ^2 θ}=\ sec ^2 θ+\tan ^2 θ

Solution:

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