SOLUTION: I need help with these, I can't seem to figure them out (sec x-tan x)(sin x+1)= cos x 1-sin^2x = cosx/ tanx+cotx tan^2 x - 1/ tan^2 x + 1 = 1

SOLUTION: I need help with these, I can't seem to figure them out (sec x-tan x)(sin x+1)= cos x 1-sin^2x = cosx/ tanx+cotx tan^2 x - 1/ tan^2 x + 1 = 1 - 2 cos^2 x

Question 930153: I need help with these, I can't seem to figure them out
(sec x-tan x)(sin x+1)= cos x
1-sin^2x = cosx/ tanx+cotx
tan^2 x - 1/ tan^2 x + 1 = 1 - 2 cos^2 x
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!

1.

start with

..............use identities and

=

=

=

=

= .......use identity

=

=

=

2.
...I am not quite sure what you need here, this is not true statement

3.

start with

=

=

=

=

=...

=

=

=
RELATED QUESTIONS
I need help verifying these identities. {{{Sin(x)Cos(x)+Cos^2x =... (answered by Edwin McCravy)

1)tan^2(x)(sin^2(x)−1)=−sin^2(x) 2) cos^2(x) = sin^2 (x) (1-csc^(x))... (answered by solver91311)

1.i need to verify the identity of sin^2x+sin^2xcot^2x=1 2. verify the identity of... (answered by MathLover1)

can you help solve 1.- sin 4x=4sinxcosxcos2x 2.- tan(x-45grades)+... (answered by solver91311)

This is proving a trigonometric equation. Verify cos(x))/(1-sin(x))=sec(x)+tan(x)... (answered by jim_thompson5910)

Solve using the fact that tanx = sinx/cosx and the Pythagorean identity on the domain [0, (answered by lwsshak3)

Verify: cos(x) / 1+sin(x) = sec(x) - tan(x) (answered by stanbon)

(sin x-1)(tan x+sec x) = cos... (answered by fractalier)

hey, i am doing a exam review packet for my math class. i am having a ton of problems... (answered by user_dude2008)