Name ________________________________________________
Period ______
13.3 Part 1 Trig with special right triangles
Find the remaining side in the triangle and the following ratios from the given Right triangle.
DO NOT USE A CALCULATOR!!
S
1. Sin R, Cos R, Tan R
45
T
R
4
2. Sin 30, Cos 30, Tan 30
12
30
3. Sin 60, Cos 60, Tan 60
6 3
60
4. The wind has blown a tree so that it is growing at an 30˚ angle with the ground. The top of the
tree is 50 feet from the ground. Find Sin 30, Cos 30 and Tan 30. Draw a picture and show work
for full credit.
5. A man is standing 90 feet from the base of a building. The angle of elevation from the
ground to the top of the building is 60 degrees. Find Sin 60, Cos 60 and Tan 60. Draw a picture
and show work for full credit.
6. A ladder is leaning on a wall at a 45 degree angle. The base of the ladder is 10 feet from the
base of the wall. Find Sin 45, Cos 45 and Tan 45. Draw a picture and show work for full credit.
7. Write a short reflection on what you can tell about the Sin, Cos and Tan of 30, 60, and 45
degree angles in any triangle, then fill in the table.
Sin
45
30
60
Cos
tan