Question
Find cosq and sinq if the terminal side of q lies along the line y = - 2 x in
quadrant IV.
quadrant IV.
Answers
take x = 1
then y = -2
hypotenuse = sqrt (1+4) = sqrt 5
then
sin q = -2/sqrt 5
cos q = 1/sqrt 5
then y = -2
hypotenuse = sqrt (1+4) = sqrt 5
then
sin q = -2/sqrt 5
cos q = 1/sqrt 5
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