Question

decide whether the following equation is a trigonometric identity. explain your reasoning.

secxtanx(1-sin^2x)=sinx

Answer 1

\[\frac{1}{cosx}\frac{sinx}{cosx}\cos^2x=sinx\]
yes

Answer 2

hello help me

Answer 3

i hav new question

Answer 4

its true because
secxtanx(1-sin^2x)=sinx
(tanx/cosx) cos^2x
the cos cancel out so your left with tanx(cosx)
tanx=sinx/cosx and you plug that for sin and you get
sinx/cosx (cosx) and the cosx cancel out so your left with sinx

Answer 5

thanks!