Answer:
C.
Step-by-step explanation:

Step-by-step explanation:
The ratio cosine tell us that
- In a right angled triangle, the cosine of an angle is the side adjacent to the angle divided by the hypotenuse of the triangle.
In other words,

The side adjacent to angle a is 9. The hypotenuse is 41.
So

Answer: 1/4+3/8+1/2+5/8+7/8
= 21/8
Hope this helps :)))
Answer
30
Step-by-step explanation:
the answer is :
90 - 60 = 30