# Find the Range y=4/5sin(x)

Find the magnitude of the trig term by taking the absolute value of the coefficient.
Find the lower bound of the range.
The lower bound of the range for sine is found by substituting the negative magnitude of the coefficient into the equation.
Simplify .
To write as a fraction with a common denominator, multiply by .
Combine and .
Combine the numerators over the common denominator.
Simplify the numerator.
Multiply by .
Move the negative in front of the fraction.
Find the upper bound of the range.
The upper bound of the range for sine is found by substituting the positive magnitude of the coefficient into the equation.
Simplify .
Write as a fraction with a common denominator.
Combine the numerators over the common denominator.