Question Factor the expression 91(405−4πc) Evaluate 45−80∘cSolution 91(405−4πc) Show Solution Find the roots c=4π405Alternative Form c≈1846.578572∘Alternative Form c≈32.228876 Evaluate 45−80∘cTo find the roots of the expression,set the expression equal to 0 45−80∘c=0Move the constant to the right-hand side and change its sign −80∘c=0−45Removing 0 doesn't change the value,so remove it from the expression −80∘c=−45Change the signs on both sides of the equation 80∘c=45Divide both sides 80∘80∘c=80∘45Divide the numbers c=80∘45Solution More Steps Evaluate 80∘45Rewrite the angle More Steps Evaluate 80∘Convert into radian measure,multiply by 180∘π 80∘×180∘πCalculate 94π 94π45Rewrite the expression 45×4π9To multiply the fractions,multiply the numerators and denominators separately 4π45×9Multiply the numbers 4π405 c=4π405Alternative Form c≈1846.578572∘Alternative Form c≈32.228876 Show Solution