Mathematics - Properties of Triangle Question with Solution | TestHub
MathematicsProperties of TriangleGeneral (basic formula based)Medium2 minQB
MathematicsMediumsingle choice
In triangle ABC, A=30° and b/c=(2++-1)/(2+-+1). Find angle C.
Options:
Answer:
C
Solution:
B+C=150°. By the sine rule b/c=sin B/sin C. Direct substitution with B=97.5° and C=52.5° gives the specified ratio, and the function sin(150°-C)/sin C is strictly decreasing for 0<C<150°, so C is unique.
Stream:JEESubject:MathematicsTopic:Properties of TriangleSubtopic:General (basic formula based)
⏱ 2mℹ️ Source: QB
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