Trigonometric Equations Question 354
Question: In $ \Delta ABC, $ if $ b=6,,c=8, $ and $ \angle A=90{}^\circ $ , then R=
Options:
A) 3
B) 4
C) 5
D) 7
Show Answer
Answer:
Correct Answer: C
Solution:
- $ \cos A=0\Rightarrow 36+64-a^{2}=0\Rightarrow a=10\Rightarrow R=\frac{a}{2\sin A}=\frac{5}{1} $ .
BETA
