SOLUTION: Use a sum or difference formula or a half angle formula to determine the value of the trigonometric functions. Give exact answers. Do not use decimal numbers. The answer should be
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Question 1149067: Use a sum or difference formula or a half angle formula to determine the value of the trigonometric functions. Give exact answers. Do not use decimal numbers. The answer should be a fraction or an arithmetic expression. If the answer involves a square root it should be enter as sqrt; e.g. the square root of 2 should be written as sqrt(2).
sin(3pi/8)=
sin(13pi/12)=
cos(7pi/12)=
cos(pi/12)=
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Look up "Half angle formulas" on Wikipedia.
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