Question

is secxtanx(1-sin^2x)=sinx a trigonometric identity?

Answer 1

Hint: 1 - 2sin^2 x = cos^2 x
- also convert secx tanx to sin's and cos's and see what you get

Answer 2

1 - sin^2 x = cos ^2 x
sec x = 1/ cos x
tan x = sin x / cos x


replace these in your identity and see what you can simplify

- maybe it will simplify to sin x

Answer 3

if it does then its a trigonometric identity

Answer 4

okay i'll try that thank you

Answer 5

yw

Answer 6

would the answer be no ?