50. cos θ1 = .5000

cos θ2 = .5000

51.

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,

= _______ .

= 60

51.

Solution:

52.

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.