Answer:
13
Step-by-step explanation:
C) They solve the same number of problems per minute
172.5 Divided by 2
115 divided by 2
= 57.5
Hello!
To find cosine, use the formula cos = adjacent / hypotenuse.
According to angle B, adjacent of angle B is side A, and the hypotenuse is side c because the hypotenuse is always opposite the right angle.
Therefore, the cosine of angle B is a/c.