Question
Asked Nov 4, 2019
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Find the exact value of the expression using the provided information.

Find sin(s + t) given that cos s = -12/13 , with s in quadrant II, and  with sin t =8/17 in quadrant II

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Expert Answer

Step 1

Given,

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12 cos (s) 13 8 sin(t) 17

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Step 2

Pythagoras theorem,

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Using Pythagoras identities, н P ө В Р В and cos (t) sin (s) Н н

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Step 3

Formula need...

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sin(A+B) sinAcos B+ sin Bcos A

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