Trigonometric Equations Question 306
Question: If the sides of triangle be 6, 10 and 14 then the triangle is
[MP PET 1982]
Options:
A) Obtuse angled
B) Acute angled
C) Right angled
D) Equilateral
Show Answer
Answer:
Correct Answer: A
Solution:
- $ \cos \theta =\frac{36+100-{{(14)}^{2}}}{2.6.10}\Rightarrow \theta =120^{o} $ .
BETA
