Trigonometric Equations Question 135
Question: If $ y=x\tan \frac{\alpha +\beta }{2} $ , then $ \tan A+\tan B+\tan C= $
Options:
A) $ \frac{a+b+c}{abc} $
B) $ 0 $
C) $ \tan A\tan B\tan C $
D) $ \tan A\tan B+\tan B\tan C+\tan C\tan A $
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Answer:
Correct Answer: C
Solution:
- It is conditional identity.
BETA
