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(a) (sin A + sin B) (sin A-sin B) ​
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(a) (sin A + sin B) (sin A-sin B)
​

User Wolfrevo
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1 Answer

2 votes

Answer:

Sin^2A-sin^2B

Explanation:

(sin A + sin B) (sin A-sin B)

=SinA(sinA-sinB)+SinB(sinA-sinB)

=Sin^2A-sinAsinB+sinBSinA-sin^2B

=Sin^2A-sin^2B

User IgalSt
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