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olga55 [171]
3 years ago
12

What is cos(x°)= cos(57°)cos(94°)-sin(57°)sin(94°)

Mathematics
1 answer:
Varvara68 [4.7K]3 years ago
3 0

Note that the given cos(57°)cos(94°)-sin(57°)sin(94°) resembles the formula

cos a cos b - sin a sin b, which is cos (a+b).


Therefore, cos(57°)cos(94°)-sin(57°)sin(94° = cos (57+94) = cos 151.

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