AP EAMCET · Maths · Trigonometric Ratios & Identities
In \(\triangle \mathrm{ABC}\), if \(\sin ^2 \mathrm{~B}=\sin \mathrm{C}\) and \(3 \cos ^2 \mathrm{~B}=2 \cos ^2 \mathrm{C}\), then \(\triangle \mathrm{ABC}\) is
- A a right angled triangle
- B an isosceles triangle
- C an equilateral triangle
- D a scalene triangle
Answer & Solution
Correct Answer
(D) a scalene triangle
Step-by-step Solution
Detailed explanation
Given \(2 \cos ^2 C=3 \cos ^2 B\) \(\Rightarrow 2-2 \sin ^2 C=3\left(1-\sin ^2 B\right)\)…
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