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Precalc help - Imagine - 2011-01-19
Given: (sinx)^4 * (tanx)^2
Simplify so that the equation is expressed in only cosx.
Precalc help - Hazzy - 2011-01-19
sin^2 x + cos^2 x = 1
tan x = (sin x)/(cos x)
Two valuable identities that should help you here.
Precalc help - Tay - 2011-01-19
(sin^2 x)(sin^2 x)(tan^2 x )
(1-cos^2 x)(1 - cos^2 x)(1 + sec^2 x)
multiply 8D
(1 - 2cos^2 x + cos^4 x)(1 + sec^2 x)
oh gee I think I did something wrong.
Precalc help - Imagine - 2011-01-19
Hazzy Wrote:sin^2 x + cos^2 x = 1
tan x = (sin x)/(cos x)
Two valuable identities that should help you here.
Used them, didn't help much.
EDIT: To clarify, for the simplified equation, you cannot have (cosx)^2, (cosx)^4, etc. , etc. Simplified equation must only have cosx and 1's.