Answer: option 2
Step-by-step explanation:
Answer: H
Step-by-step explanation:
Answer:
pretty sure its 75 degrees
Step-by-step explanation:
subtract 105 and 30 degrees and if you had to find the one on the top it would be the same process
Answer: option c.
Step-by-step explanation:
You need to remember the identity:

The inverse of the tangent function is arctangent. You need to use this to calculate the angle "R":
You know that you need to find the measure of "R" and
(which is the opposite side) and
(which is the adjacent side), you can sustitute values into 
Then, you get:
