(A) Evaluate 2 \sec ^2 \theta+3 {\cosec}^2 \theta-2 \sin \theta \cos \theta \text{ if } \theta=45^{\circ} \text{. } OR (B) If \sin \theta-\cos \theta=0, then find the value of \sin ^4 \theta+\cos ^4 \theta.

CBSE Class 10 Math 2023 Delhi Set-3 Solved Paper

SECTION - B
Section-B consists of Very Short Answer (VSA) type questions of 2 marks each.

Question : 7

Total: 11

(A) Evaluate
2 sec2θ+3cosec2θ−2sin‌θ‌cos‌θ‌ if ‌θ=45∘‌. ‌
OR
(B) If sin‌θ−cos‌θ=0, then find the value of sin‌4θ+cos4θ.

Solution: 👈: Video Solution

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