SOLUTION: Given that the exact value of sin pi/10 = -1+√5/4, for each question calculate the exact value of the expression. You may leave nested radicals in your answer, but rationaliz

Algebra ->  Trigonometry-basics -> SOLUTION: Given that the exact value of sin pi/10 = -1+√5/4, for each question calculate the exact value of the expression. You may leave nested radicals in your answer, but rationaliz      Log On


   



Question 1125837: Given that the exact value of sin pi/10 = -1+√5/4, for each question calculate the exact value of the expression. You may leave nested radicals in your answer, but rationalize any denominaters.
sin pi/5
sin pi/20

Answer by MathLover1(20850) About Me  (Show Source):