Math, asked by avnisuryawanshi, 10 months ago

sin 40+ sin 20º = cos10​

Answers

Answered by adityachoudhary2003
2

Answer:

You will get this answer by following trigonometric identity which is given in 11th standard RD Sharma maths book.

sin(A+B)=sinA*cosB+ cosA+sinB.

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