WBJEE · Maths · Trigonometric Ratios & Identities
The approximate value of \(\sin 31^{\circ}\) is
- A \(>0.5\)
- B \(>0.6\)
- C \( < 0.5\)
- D \( < 0.4\)
Answer & Solution
Correct Answer
(A) \(>0.5\)
Step-by-step Solution
Detailed explanation
We know that, \(\sin 30^{\circ}=\frac{1}{2}=0.5\) In \(1^{\text {st }}\) quadrant \(\sin x\) is increasing function. \(\sin 31^{\circ}>\sin 30^{\circ}\) \(\Rightarrow \quad \sin 31^{\circ}>0.5\)
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