There are 15 non fiction books and 37 fiction books in the teacher’s collection. which of the following expresses the ratio of fiction books to non fiction books in simplest form?

a. 15: 37
b. 15/37
c. 37: 15
d. 3: 5

The answer is A. 15:37 Good luck to you! Stay safe and Healthy!

step-by-step explanation :

we know that

the measurement of the outer angle is the semi-difference of the arcs which comprises

in this problem

m< xzy is the outer angle

substitute the values

the measure of angle xoy is equal to

> by central angle

substitute the value

answer: cos [   arcsin (3/5) - arccos (1/2) ] =

step-by-step explanation: × = 3/5 = 0.6--> x = 36.87 and x = 180 - 36.87 = 143.13 deg

cos y = 1/2 --> y = +- 60 deg a. cos (x - y) = cos (143.13 - 60) = cos 83,13  

=

0.12

b. cos (36.87 - 60) = cos (-23.23) = 0.92