Trigonometry Examples

Find an angle that is positive, less than , and coterminal with .
Tap for more steps...
Subtract from .
The resulting angle of is positive, less than , and coterminal with .
Since the angle is in the third quadrant, the reference angle formula is .
Simplify the right side of the equation
Tap for more steps...
To write as a fraction with a common denominator, multiply by .
Write each expression with a common denominator of , by multiplying each by an appropriate factor of .
Tap for more steps...
Combine.
Multiply by to get .
Combine the numerators over the common denominator.
Simplify the numerator.
Tap for more steps...
Factor out of .
Multiply by to get .
Subtract from to get .
Multiply by to get .
Enter YOUR Problem
Mathway requires javascript and a modern browser.
  [ x 2     1 2     π     x d x   ]