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Trigonometry Properties of Triangles

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ABC is a traingle such that sin (2A + B) = sin (C - A) = -sin(B + 2C) = 1/2 If a, B and C are in A. P. , then A, B and C are

A. 30^o, 60^o, 90^o

B. 45^o, 60^o, 75^o

C. 45^o, 45^o, 90^o

D. 60^o, 60^o, 60^o

E. None of the above

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Correct choice: B

Explanation:

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Eamcet Mathematics Trigonometry Properties of Triangles

Eamcet Mathematics
Trigonometry Properties of Triangles