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Use a sum or difference formula to find the exact value of Sin 11pi/12 cos 2pi/3 - cos 11pi/12 sin2pi/3
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Use a sum or difference formula to find the exact value of Sin 11pi/12 cos 2pi/3 - cos 11pi/12 sin2pi/3
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Jun 18, 2019
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Use a sum or difference formula to find the exact value of
Sin 11pi/12 cos 2pi/3 - cos 11pi/12 sin2pi/3
Mathematics
middle-school
Iman Mohamadi
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We obtain sin( 11pi/12 - 2pi/3 ) = sin( 11pi/12 - 8pi/12 ) = sin( 3pi/12) = sin(pi/4) =
(ave the formula sinxcosy - cosxsiny = sin(x-y));
Dokaspar
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Jun 22, 2019
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Dokaspar
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