I need help with this equation: sin(x)cos(x)tan(x)=1-cos^2(x)
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Originally Posted by marekd I need help with this equation: sin(x)cos(x)tan(x)=1-cos^2(x) hi some hints , tan x = sin x/cos x sin^2 x + cos^2 x=1
Hi substitute for tanx. This will give you as you can see the cosx will cancel on the left side of the equal sign. This leaves you with and you know the trig identity of Does that clear everything up for you?
Helps a lot. Thanks you guys
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