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How do you evaluate the sine, cosine, and tangent of the angle #(11pi)/4# without using a calculator?

1 Answer

Jun 30, 2015

Find 6 trig functions of #x = (11pi)/4#

Explanation:

#sin ((11pi)/4) = sin ((3pi)/4 + 2pi) = sin ((3pi)/4) = (sqrt2)/2#

#cos ((11pi)/4) = cos ((3pi)/4) = - (sqrt2)/2#

#tan ((11pi)/4) = - 1#

#cot ((11pi)/4) = - 1#

#sec ((11pi)/4) = - sqrt2#

#csc ((11pi)/4) = sqrt2#

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