To find the number of degrees in the
, fold out the trig
tables (Table of Natural Functions) on the last page of the
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,
the page. The size of the angle is found opposite the .5000 in
the DEG column.
sin 1 = .5000
sin 2 = .5000
When sin = .5000,
= __________ .
Another trig function we use is the COSINE function
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 ________________