Why are the values for sine and cosine equal at 45°?

The complement of is .

Step-by-step explanation:

Method 1

From the isosceles right triangle; See diagram in attachment.

Also;

Hence;

Method 2

because the complement of is still .

Complementary angles add to .

In general if we have an angle , then its complement is .

There is a relationship between the sine of an angle, and the cosine of its complement,(90-\theta)\degree[/tex].

The relationship is that,

.

If , then

.

.

answer: a. 13/44

step-by-step explanation: judging by the information given to us, we are looking for experimental probability. we can see that 13 males have chosen chocolate ice cream. there are 44 ice creams in total (remember that the total is always the denominator). so our answer is 13/44.