- Joined
- Jul 27, 2014
- Messages
- 106
- Reaction score
- 3
- Points
- 4,601
- Pre-Dental
Advertisement - Members don't see this ad
In the figure, the horizontal incident ray I strikes the circular mirror, X^2 + Y^2 = 25, resulting in the reflected ray R. What is the y coordinate of the intersection point of the ray R and the line x = 127. You may need to use the identity tan (2 theta) = 2 tan (theta)/1 (1-tan^2 theta).
I uploaded the picture of the question down. The answer is choice B. I don't have the answer sheet with me.
I realize that r = 5, figured out one length of the triangle, however; I can't figure out where to go from there. Please help me if you have any idea how to solve this question. Thank you!
I uploaded the picture of the question down. The answer is choice B. I don't have the answer sheet with me.
I realize that r = 5, figured out one length of the triangle, however; I can't figure out where to go from there. Please help me if you have any idea how to solve this question. Thank you!