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Find: sin theta cos theta and theta

Mathematics
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if the coordinates of point A are (sqrt 2/2, sqrt 2/2)

Nov 19th, 2014

Point A ( sqrt 2/2 , sqrt 2/2)

now sqrt 2/2 = sqrt 2/ (sqrt 2* sqrt 2) = 1/sqrt 2

therfore , Point A (1/sqrt 2, 1/sqrt 2)

now sin theta  = x = 1/sqrt 2
and cos theta = y = 1/sqrt 2
we know for cos 45 = sin 45 = 1/sqrt 2

so the value of theta here is 45 degree .

Please bestest my answer if helpful :)

Nov 19th, 2014

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Nov 19th, 2014
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Nov 19th, 2014
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