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Use an identity to find the value of
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Use an identity to find the value of

Use an identity to find the value of-example-1
User Nick Evans
by
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2 Answers

7 votes
  • sin(A+B)=sinAcosB+cosAsimB

So

  • sin(Ø+180)
  • sinØcos180+cosØsin180
  • -sinØ+0
  • -sinØ
User Nicolas Finelli
by
5.6k points
9 votes

Answer:

-sin Ф

Explanation:

sin( O + 180) = sinФ cos180 + sin180 cosФ

= sin Ф * -1 + 0 * cos Ф

= -sin Ф

User UsmanJ
by
5.9k points
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