12/3=4
so m=4
6x4=24
6x1=6
24-6=18
Answer:
A.
Step-by-step explanation:
I don’t know I hope u get it
Answer:
Step-by-step explanation:
Given:

To find 
Using trigonometric relations for sums and differences of squares of the ratios.
We know:

Plugging in
in the above relation.

Subtracting both sides by 0.75.


Taking square root both sides.

∴
(Answer)
C!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!