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Simplify cos(-1/3+-1/4)
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Feb 19, 2018
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Simplify cos(-1/3+-1/4)
Mathematics
high-school
Kathirmani Sukumar
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Kathirmani Sukumar
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hello :
cos(-π/3 -π/4) = cos(- (π/3 +π/4) ) = cos (π/3 +π/4)
= cos(π/3) cos(π/4) - sin(π/3) sin(π/4)
= (1/2)(√(2)/2) - (√(3)/2)(√(2)/2)
=(√(2)-√(6)/)/4
Dinesh Reddy
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Feb 20, 2018
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Dinesh Reddy
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cod (-0.3-0.25)=
cos (-0.55)=0.45.
Sebastian Negraszus
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Feb 23, 2018
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Sebastian Negraszus
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