Question:
If \(\cos\theta=-\frac{3}{5}\) and \(\theta\) lies in the second quadrant, then \(\sin\theta\) is:
If \(\cos\theta=-\frac{3}{5}\) and \(\theta\) lies in the second quadrant, then \(\sin\theta\) is:
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Remember signs of trigonometric ratios in quadrants.
Updated On: Jan 5, 2026
- \(4/5\)
- \(-4/5\)
- \(3/5\)
- \(-3/5\)
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The Correct Option is A
Solution and Explanation
In second quadrant, sine is positive:
\[
\sin\theta=\sqrt{1-\cos^2\theta}=\frac{4}{5}
\]
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