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Maths CBSE Live product
Class 10
Introduction to trigonometry
Trigonometric values
1.
PYQ - Choose the correct answer
Question:
1
m.
If \(\cos (\alpha + \beta) = 0\), then value of \(\cos \left( \frac{\alpha + \beta}{2} \right)\) is equal to:
\(\sqrt{2}\)
\(\frac{1}{2}\)
\(\frac{1}{\sqrt{2}}\)
\(0\)
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