Asked by Jackie
Find the exact value of the expression.
sin(arccos sqrt(5)/5)
sin(arccos sqrt(5)/5)
Answers
Answered by
bobpursley
remember Sin^2Theta+cos^2Theta=1
so if cosTheta= sqrt5/5, you can find sinTheta.
so if cosTheta= sqrt5/5, you can find sinTheta.
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