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Mathematics 14 Online
OpenStudy (anonymous):

sin(x) - cos(x) = 1/2, then what is the value of sin(2x)?

OpenStudy (anonymous):

Hint: square both sides

hartnn (hartnn):

yup, that would get u to answer.....

OpenStudy (anonymous):

Thanks

hartnn (hartnn):

1-sin2x = 1/4

OpenStudy (anonymous):

Welcome

OpenStudy (anonymous):

but @sauravshakya squaring gives extraneous roots what about that i am not convinced with this method

OpenStudy (anonymous):

??

OpenStudy (anonymous):

divide both sides by 2

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