MCQ
Which is not correct formula ?
- A$1+\tan ^2 \theta=\sec ^2 \theta$
- ✓$1+\sec ^2 \theta=\tan ^2 \theta$
- C$\operatorname{cosec}^2 \theta-\cot ^2 \theta=1$
- D$\sin ^2 \theta+\cos ^2 \theta=1$
✓
Answer
Correct option: B.
$1+\sec ^2 \theta=\tan ^2 \theta$
$1+\sec ^2 \theta=\tan ^2 \theta$
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