Asked by Maddy
Write the expression as the sine, cosine, tangent of an angle (in radians.)
(tan(pi/5)-tan(pi/3))/(1+tan(pi/5)tan(pi/3))
(tan(pi/5)-tan(pi/3))/(1+tan(pi/5)tan(pi/3))
Answers
Answered by
Steve
recall the tangent addition/subtraction formulas. You have
tan(pi/5 - pi/3) = tan(-2pi/15) = -tan(2pi/15)
tan(pi/5 - pi/3) = tan(-2pi/15) = -tan(2pi/15)
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