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jeka94
3 years ago
7

Find the exact value sin 79° cos 19° - cos 79° sin 19°

Mathematics
1 answer:
Aneli [31]3 years ago
6 0

Step-by-step explanation:

Using the trigonometric identity

sin(a - b) = sin a cos b - cos a sin b

So sin 79° cos 19° - cos 79° sin 19° can be written as

sin ( 79 - 19) = sin 60

And

\sin(60)  =  \frac{ \sqrt{3} }{2}

Hope this helps you

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3 years ago
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