Asked by Kagisho
simplify sin(360-x)*tan(-x)/cos(180+x).(sin^2A+cos^2A)
Answers
Answered by
oobleck
since
sin(360-x) = -sinx
tan(-x) = -tanx
cos(180+x) = -cosx
(sin^2A+cos^2A) = 1
you really just have
-sinx tanx/cosx = -sin^2x/cos^2x = -tan^2x
sin(360-x) = -sinx
tan(-x) = -tanx
cos(180+x) = -cosx
(sin^2A+cos^2A) = 1
you really just have
-sinx tanx/cosx = -sin^2x/cos^2x = -tan^2x
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