Question

cos(B+C/2)sinA/2+sin(B+C/2)cosA/2=1​

Answer 1

Answer:

Transformation formulae Key to remember

2sinA cosB = sin(A + B) + sin(A - B) 2 sin. cos = sin + sin

2 cosA sinB = sin(A + B) - sin(A - B) 2 cos. sin = sin - sin

2 cosA cosB = cos(A + B) + cos(A - B) 2 cos. cos = cos + cosep

hope it helps u

Answer 2

Answer:

Step-by-step explanation:

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