If B = 30°, then find the value of (1- B)(1+ B) (1- B)(1+ B) .
Physics · NEET · NTA Exams — Basic Mathematics for Physics
If B = 30°, then find the value of \(\frac{(1-\cos B)(1+\cos B)}{(1-\sin B)(1+\sin B)}\).
- 1
- 2/3
- 1/3
- 3/5
Answer
(C) 1/3
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