Introduction to Trigonometry
CBSE 2026 Board Exam Set 1 (Code 30/1/1)
CBSE_BOARD_PYQ_2026_30_1_1
Grade 10
Question:
[Section A]
The value of $(\sin^2 30^\circ + \cos^2 30^\circ)$ is:
(A) $0$
(B) $1$
(C) $2$
(D) $1/2$
Step-by-Step Solution
Key Concept: Fundamental identity $\sin^2 \theta + \cos^2 \theta = 1$.
Sol. (B) $1$. [1.0 Mark]
Correct Answer: (B) $1$
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