Trigonometry Examples

Find the Exact Value tan(-pi/3)
tan(-π3)
Step 1
Add full rotations of 2π until the angle is greater than or equal to 0 and less than 2π.
tan(5π3)
Step 2
Apply the reference angle by finding the angle with equivalent trig values in the first quadrant. Make the expression negative because tangent is negative in the fourth quadrant.
-tan(π3)
Step 3
The exact value of tan(π3) is 3.
-3
Step 4
The result can be shown in multiple forms.
Exact Form:
-3
Decimal Form:
-1.73205080
 [x2  12  π  xdx ]