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cos94 degrees cos18 degrees+ sin94 degrees sin18 degrees.

write the expression as the sine, cosine, or tangent of an angle.

3 answers

use the identity:
cos(A-B)= cosAcosB + sinAsinB

cos94°cos18° + sin94°sin18° = cos(94-18) = cos 76°

is that the answer?

yes, check it out with a calculator.

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