SOLUTION: cosine s = 12/13 sine t = 4/5 Sin (s+t)=

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Question 1079467: cosine s = 12/13
sine t = 4/5
Sin (s+t)=

Found 2 solutions by Alan3354, solver91311:
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
cosine s = 12/13
sine t = 4/5
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Use sin^2 + cos^2 = 1 to find sin(s) and cos(t)
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Then, sin(s+t) = sin(s)*cos(t) + sin(t)*cos(s)

Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


If then . Then , , and finally

Similarly, from you can derive



Plug in the numbers and do the arithmetic. You will get two solutions because will be one sign or the other depending on the signs of and

John

My calculator said it, I believe it, that settles it