show work plz
3. Express each of the following as the same function of a positive acute angle:
a. cos 112° 33’
b. tan 310°
c. cot 138° 15’ 10”
d. sin ( - 140° )
4. Express each as a function of 0:
a. sin (270° + 0)
b. cos (π +0)
c. tan (810° +0)
d. sin (0 - 180°)
2006-12-21 07:14:05 · 3 answers · asked by damaka 1 in Science & Mathematics ➔ Mathematics
3a. cos of 90degrees + an angle is the same as the negative cos of that angle less 90 degrees
ie. cos of 112degrees 33 minutes = -(cos( 112 degrees
33 minutes less 90 degrees)) = -cos (22degrees 33minutes )
2006-12-21 07:36:09 · answer #1 · answered by ? 3 · 0⤊ 0⤋
0-7+2
2006-12-21 07:16:52 · answer #2 · answered by Anonymous · 0⤊ 1⤋
oops!
3.
a ~68º
b ~130º
c ~-42º
d 40º
4. zero or "fi" ?
a
b
c
d
2006-12-21 07:18:38 · answer #3 · answered by Apolo 6 · 0⤊ 0⤋