46. Solutions:

47.

To find the number of degrees in the

, fold out the trig

tables (Table of Natural Functions) on the last page of the

program.

NOTE: Tab the trig table folded out for reference during the

remainder of program.

NOTE: Zeros are

added to conform with

the four decimal places

Now, go down the first SIN column to .5000 at the bottom of

given in the trig tables,

therefore:

the page. The size of the angle is found opposite the .5000 in

sin θ 1 = .5000

the DEG column.

sin θ 2 = .5000

When sin θ = .5000,

= __________ .

48.

Another trig function we use is the COSINE function

= 30.0

47.

(abbreviated cos).

The sides used in solving for the cosine function are labeled on the drawing below.

When solving for the cosine of

, the horizontal side is the side ________________

the angle.

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