Use an identity to find the value of

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Georgebrock asked Aug 28, 2023

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35 votes

Use an identity to find the value of

Mathematics
high-school

Georgebrock asked Aug 28, 2023

by Georgebrock

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sin(A+B)=sinAcosB+cosAsimB

sin(Ø+180)
sinØcos180+cosØsin180
-sinØ+0
-sinØ

Ichibanpanda answered Aug 29, 2023

by Ichibanpanda

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18 votes

Answer:

-sin Ф

Explanation:

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

= sin Ф * -1 + 0 * cos Ф

= -sin Ф

Mybecks answered Sep 3, 2023

by Mybecks

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