sin x = -pi/2 has no solution
sin x has to be between -1 and 1
-pi/2 is -1.57, which is outside the range of sin (and cos, for that matter)
however, sin (-pi/2) does = -1
this may be what you were thinking of...
Is that a recipe for a drink?
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sin x = -pi/2 has no solution
sin x has to be between -1 and 1
-pi/2 is -1.57, which is outside the range of sin (and cos, for that matter)
however, sin (-pi/2) does = -1
this may be what you were thinking of...
Is that a recipe for a drink?