Cos(11*)cos(19*) - sin(11*) sin(19*) Write the expression as a function of one number then find it’s exact value.

asked Apr 24, 2023 10.8k views

1 vote

Cos(11*)cos(19*) - sin(11*) sin(19*)

Write the expression as a function of one number then find it’s exact value.

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6 votes

Answer:

√3/2

Explanation:

This is compound angle of cosine

cos(11+19)

=cos(30)

=√3/2

Ben Jakuben answered Apr 29, 2023

6.5k points

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