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Maths CBSE Live product
Class 10 (2025-26)
Introduction to trigonometry
Annual Revision III - Introduction to trigonometry
9.
Choose the correct answer
Question:
5
m.
If \(\cos A + \sin A = \sqrt{2} \cos A\), then \(\cos A - \sin A =\)
\(2\sin A\)
\(\sqrt{2} \sin A\)
\(\sqrt{2} \cos A\)
\(2\cos A\)
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