Hi
I used another place to type my answer because I don't think Brainly has all the tools I need.
I hope this finally help and I am sorry for my laziness :)
As always, I am here to help!
Given:
The value is 
.
To find:
The values from the given options which are equal to the given value.
Solution:
We have,
It can be written as:
From the standard trigonometric table, we get
From the above values it is clear that the value of 
and 
are equal to 
.
Therefore, and and equal to . So, options B and C are correct.
The equation to solve for angle 1 is reliant upon the fact that the measure of an exterior angle is equal to the sum of its interior angles. In our case, angle 1 = 38 + 70 which is 108. Now to find angle 2 we have to rely upon the fact that angles 1 and 2 are supplementary, or angle 2 = 180 - angle 1. We have angle 1 is 108 so angle 2 = 180 - 108 and angle 2 = 72
Answer:
-3.
Step-by-step explanation:
r = -6/2 = -3.
