oblicz:
sin (-510stopni)
cos (-510stropni)
sin(-510°) = -sin510°= -sin(360°+150°) = -sin150°= -sin(90°+60°)= -cos60°= -½
cos(-510°) = cos510°= cos(360°+150°) = cos150°= cos(90°+ 60°) = -sin60°= -√3/2
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sin(-510°) = -sin510°= -sin(360°+150°) = -sin150°= -sin(90°+60°)= -cos60°= -½
cos(-510°) = cos510°= cos(360°+150°) = cos150°= cos(90°+ 60°) = -sin60°= -√3/2