The editor is doing strange things. I have to start over.
Are we working with a right triangle?
Use a^2 + b^2 = c^2 to find out. The right angle is opposite <A. So the equation becomes b^2 + c^2 = a^2. (a is the longest line and hence it is the hypotenuse.
b= 99
c = 20
a = 101
99^2 + 20^2 = 101^2
9801 + 400 = 10201 but 101^2 = 10201 so we are working with a right angle triangle.
Find the trig functions.
Sin(B) = opposite / hypotenuse = AC/BC = 99/101
Cos(B) = adjacent / hypotenuse = AB / BC = 20/101
Tan(B) = opposite / adjacent = AC/AB = 99/20
If these are not your answers, try putting in the decimal form
Sin(B) = 0.9802
Cos(B) = 0.1980
Tan(B) = 4.95
