GeorgineFarias GeorgineFarias

06-08-2014
Mathematics

contestada

Can anyone help???

simplify: cos(126°)cos(36°) + sin(126°)sin(36°)

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Everest2017 Everest2017

06-08-2014

cos A cos B + sin A sin B = cos (A - B)

given expression is = cos (126 - 36 ) = cos 90 = 0

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Аноним Аноним

06-08-2014

A-b is the answer if u know how to simplify numbers similar to that

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