Trigonometric Equations Question 213
Question: In $ \Delta ABC, $ $ \text{cosec }A(\sin B\cos C+\cos B\sin C)= $
[MP PET 1986, 1995; Pb. CET 1990, 94]
Options:
A) $ c/a $
B) $ a/c $
C) 1
D) $ c/ab $
Show Answer
Answer:
Correct Answer: C
Solution:
- $ ( \frac{b}{a}\cos C+\frac{c}{a}\cos B )= $ 1; (by projection rule).
BETA
