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Maths CBSE Mentoring
Class 10 Crash course
Introduction to Trigonometry
Annual Revision IV - Introduction to Trigonometry
9.
Evaluate the expression
Question:
5
m.
If \(\frac{\cos \theta}{1 + \sin \theta} = \frac{1}{a}\), then \(\frac{a^2 - 1}{a^2 + 1}\) is
\(cot \theta\)
\(\sin \theta\)
\(\cos \theta\)
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