TS EAMCET · Maths · Properties of Triangles
In triangle , if is acute, is obtuse, and , then
- A
- B
- C
- D
Answer & Solution
Correct Answer
(B)
Step-by-step Solution
Detailed explanation
Given, In triangle ABC, if A is acute, C is obtuse and sinA=3314, Where a=3,b=5, Now finding cosA=1-sin2A=1-33142=169142=1314 Now using cosine formula we get, cosA=b2+c2-a22bc ⇒1314=52+c2-322×5c ⇒1314=16+c210c ⇒65c=716+c2 ⇒7c2-65c+16×7=0…
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