Answer:

Step-by-step explanation:
Notice from the attached image that -315 degrees is the same as 45 degrees.
Recall as well that the csc function is defined as the reciprocal of the sine function: 
Then, you need to evaluate 
Answer:
Ben is 19 Ishaan is 7
Step-by-step explanation:
Answer:
2, 8, 90, 160
that is the focal, vertex l, direction
Answer:
If R is equal 5.1, Let x be A/A0
Then we have logx=5.1
Solving this we have x=125893