Home Maths Trigonometrical Ratios, Functions and Identities Trigonometrical Ratios of Multiple and Sub-Multiple Angles If and where and are positive acute angl…
Maths Trigonometrical Ratios, Functions and Identities Trigonometrical Ratios of Multiple and Sub-Multiple Angles Single Correct MCQ
Published on: August 11, 2026

If and where and are positive acute angles, then

A
B
C
D

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Text Solution

Verified by Experts
The correct answer is:
B

We have and .

Therefore

But

∴ ∴ . Hence, .

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