Question Factor the expression 451(900−7πc) Evaluate 20−28∘cSolution 451(900−7πc) Show Solution Find the roots c=7π900Alternative Form c≈2344.861679∘Alternative Form c≈40.925557 Evaluate 20−28∘cTo find the roots of the expression,set the expression equal to 0 20−28∘c=0Move the constant to the right-hand side and change its sign −28∘c=0−20Removing 0 doesn't change the value,so remove it from the expression −28∘c=−20Change the signs on both sides of the equation 28∘c=20Divide both sides 28∘28∘c=28∘20Divide the numbers c=28∘20Solution More Steps Evaluate 28∘20Rewrite the angle More Steps Evaluate 28∘Convert into radian measure,multiply by 180∘π 28∘×180∘πCalculate 457π 457π20Rewrite the expression 20×7π45To multiply the fractions,multiply the numerators and denominators separately 7π20×45Multiply the numbers 7π900 c=7π900Alternative Form c≈2344.861679∘Alternative Form c≈40.925557 Show Solution