Question

the value of sin(A+B+C)
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Answer 1

Answer:

your answer will be:

Step-by-step explanation:

sin(A+B+C) =180°

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Answer 2

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➲ Solution :

As we know that,

sin ( A+B) = sin A cos B + cos A sin B

&

cos (A+B) = cos A cos B - sin A sin B

Now expanded form of

sin ( A+B+C)

= sin (A+B) cos C + cos ( A+B) sin C

= ( sin A cos B + cos A sin B) cos C +( cos A cos B - sin A sin B) sin C

= sin A cos B cos C + cos A sin B cos C + cos A cos B sin C - sin A sin B sin C

Note: Here, (A+B) consider as a one angle in sin ( A+B+C).

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