Question

Evaluate 15cos60°. evaluate.

Answer 1

Answer:

15/2 or 7.5

Step-by-step explanation:

cos(60)=1/2

so 15(1/2)=15/2 or 7.5

Answer 2

For this case we must evaluate the following expression:

$15 * cos (60)$

By definition we have that the cosine of 60 degrees is $\frac {1} {2}.$ Then, substituting in the expression we have:

$15 * \frac {1} {2} = \frac {15} {2} = 7.5$

So, we have:

$15 * cos (60) = 7.5$

Answer:

$15 * cos (60) = 7.5$