Find cos(−2835°) and sin(−2835°). identify the measure of the reference angle

Solution:

As per the question:

We need to find the values of:

Now, we know that:

Also

Now,

From the above eqn (1)  and (2):

Now the above respective values can be further calculated from eqns (3) and (4):

where

n = 8

you answer is a

step-by-step explanation:

b. 153 students do not participate in sports and seventy-five 12th graders were surveyed