Trigonometric Ratios and Identities

Section: Mathematics

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Question : 21 of 50

Marks: +1, -0

If A,B,C are the angles of a triangle, then ‌

sin‌A+sin‌B+sin‌C

sin‌2‌

A

2

−sin‌2‌

B

2

+sin‌2‌

C

2

−1

=

[AP EAPCET 23 May 2024 S1]

‌−2‌tan‌
B
2
‌−2‌cot‌
B
2
‌2‌tan‌
B
2
‌2‌cot‌
B
2

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