Prove the following identity : ( \sin ^2 \theta-1) (\tan ^2 \theta+1) +1=0

ICSE Class X Math 2023 Solved Paper - Question 20

Question : 20 of 41

Marks: +1, -0

Prove the following identity :

( sin \;^2 θ-1) (\tan ^2 θ+1) +1=0

Solution:

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