Introduction to Trigonometry · Class 10 · CBSE Mathematics
Evaluate: 9 sec^2 A - 9 tan^2 A.
Practice question from Introduction to Trigonometry (Class 10 · CBSE Mathematics), with the correct answer and a step-by-step solution.
easy · MCQ · Q-AA3FD1
Evaluate: .
- A.
- B.Correct answer
- C.
- D.
Solution
Taking 9 common from the expression, we get . Since for any angle , the expression evaluates to .
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