50. cos θ1 = .5000
cos θ2 = .5000
To find the number of degrees in
, again use the trig tables on page 1-59. This time,
go down the column marked COS until the cosine value, .5000, is found. Opposite this
value, in the column marked DEG, you will find the number of degrees in
When cos θ = .5000,
= _______ .
The third trig function we use is the TANGENT function (abbreviated tan). The sides
used to solve for the tangent function are labeled on the drawing below.
When solving for the tangent of
, you use the side opposite and the side
________________ the angle.