Find the values of the trigonometric functions of t from the
Find the values of the trigonometric functions of t from the given information.
cos t =
, terminal point of t is in Quadrant III
a) sin t=
b) tan t=
c)sec t=
d)cot t=
e)csc t=
| 4 | 
| 5 | 
Solution
Here we have that as cos x= base/hypotenues
so in such right triangle formed, we have its hypotenues as 5 and base 4 given here, so using pythagorean theorem,
(Hypotenues)^2=height^2+base^2
5^2=4^2+height^2
(height)^2= 25-16=9
or height =3
so sin t= height/hypotenues = -3/5
tan t= height/base = 3/4
cot t=1//tan t = 1/(3/4)= 4/3
sec t = 1/cos t=1/(-4/5)= -5/4
and lastly csc t=1/sin t = 1/(-3/5)= -5//3
Answer

