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Mathematics 9 Online
OpenStudy (anonymous):

Verify the identity. sin (x + y) - sin (x - y) = 2 cos x sin y

OpenStudy (anonymous):

@zordoloom

OpenStudy (anonymous):

Does it matter from which side you work from?

OpenStudy (anonymous):

no i dont think so but i need to know what to do step by step plz

OpenStudy (anonymous):

Do you know the formula sin(a+b)=sinacosb+cosasinb?

OpenStudy (anonymous):

Give me like 5 min. I'll write it out.

OpenStudy (anonymous):

okkk

OpenStudy (anonymous):

OpenStudy (anonymous):

ur amazing

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