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anonymous

  • 4 years ago

Can anyone tell me how to solve this problem without using a reduction formula. I have the answer, I just don't know how to get there. Thanks!

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  1. anonymous
    • 4 years ago
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  2. anonymous
    • 4 years ago
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    The answer is stuff written in the green box btw

  3. UnkleRhaukus
    • 4 years ago
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    \[2sin{a} \times cosb=sin(a+b)+sin(a-b)\]

  4. anonymous
    • 4 years ago
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    Is that a commonly known trig identity? I am not familiar with that one.

  5. UnkleRhaukus
    • 4 years ago
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    well it is 1 of 12 in my book, i never remember any of these but i reckon it will work because sine integrates to cosine which is the form of your answer

  6. anonymous
    • 4 years ago
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    cool beans, thanks

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