sin cos tan O H A H O A H csc O H sec A A cot O

Today we will:
Find the exact value of a trig function for a given angle
Find the exact value of a trig expression
Find the exact values of all six trig functions given an
angle
Use a calculator to approximate the value of a trig
expression, rounded to four decimal places
Recall right triangle trig SOH-CAH-TOA
Sine, cosine and tangent are the primary
trigonometric functions.
Cosecant, secant, and cotangent are
reciprocal trig functions.
sin
cos
tan
O
H
A
H
O
A
H
csc
O
H
sec
A
A
cot
O

Find the value of each of the six trig
functions for the angle 3
Note: with points on the unit circle, the value of sine
corresponds to the y value of the coordinate, the
value of cosine corresponds to the x value of the
coordinate, and the value of tangent corresponds to
y
x .
.

Find the exact value:
cot
7
2
Find the exact value for each expression:
sin 30 cos 45
sec30cot 45

Find the value of all six trig functions for the
given angle:
2
3

Use a calculator to approximate the value of each
expression: (hint: check the mode on your
calculator – you will need to alternate between
radians and degrees)
cos14
cot 12