trig help with sum and difference sin and tan identities

Mathematics
Tutor: None Selected Time limit: 1 Day

use sin(s+t) and tan(s+t) given that cos(s)=3/5 and sin(t)=5/13, with 's' and 't' both in quadrant 1

May 12th, 2015

Feel free to ask any doubts.

May 12th, 2015

after it do as I did. You will get the answer

May 12th, 2015
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so is the 63/16 not the answer for tan(s+t)?

May 12th, 2015

it is the right answer

I was talking about the question you posted just now for $1-5

May 12th, 2015
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oh okay lol that makes sense now. Thank you!

May 12th, 2015

Happy to help.............................

May 12th, 2015

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May 12th, 2015
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May 12th, 2015
May 27th, 2017
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