Mathematics, 27.12.2019 22:31 chrissak8118
Derive these identities using the addition or subtraction formulas for sine or cosine: sinacosb=(sin(a+b)+sin(a-b))/2
Answers: 1
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and the 
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![=[\sin(a+b)]+[\sin(a-b)]](/tpl/images/0434/9771/2c4ce.png)
![=[\sin(a)\cos(b)+\cos(a)\sin(b)]+[\sin(a)\cos(b)-\cos(a)\sin(b)]](/tpl/images/0434/9771/fa4bb.png)
![=[\sin(a)\cos(b)+\sin(a)\cos(b)]+[\cos(a)\sin(b)-\cos(a)\sin(b)]](/tpl/images/0434/9771/adeef.png)
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Derive these identities using the addition or subtraction formulas for sine or cosine: sinacosb=(si...
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