Homework Help: Math - Trigonometry

Posted by Trevor on Tuesday, October 13, 2009 at 7:28pm.

Verify the following:

1. cos x/(1-sinx)= sec x + tan x

2. (tanx+1)^2=sec^2x + 2tan x

3. csc x = )cot x + tan x)/sec x

4. sin2x - cot x = -cotxcos2x

Math - Trigonometry - Reiny, Tuesday, October 13, 2009 at 8:04pm
Hint:
change all trig ratios to sines and cosines.

I will do one for you.

3. csc x = (cot x + tan x)/sec x

RS = (cosx/sinx + sinx/cosx)/(1/cosx)
= (cos^2 x + sin^2 x)/(sinxcosx) * cosx
= (1/(sinxcosx)(cosx)
= 1/sinx
= csc x
= LS
Math - Trigonometry - Anonymous, Wednesday, February 24, 2010 at 9:42pm
I dont know

Answer this Question

Related Questions

trigonometry repost - Reduce (csc^2 x - sec^2 X) to an expression containing ...
TRIGONOMETRY *(MATHS) - Q.1 Prove the following identities:- (i) tan^3x/1+tan^2x...
Math - Trig - I'm trying to verify these trigonometric identities. 1. 1 / [...
math - 1. (sinx/cscx)+(cosx/secx)=1 2. (1/sinxcosx)-(cosx/sinx)=tanx 3. (1/1+cos...
trig - For each expression in column I, choose the expression from column II to ...
Trigonometry - Verify the identities. 1.) SIN[(π/2)-X]/COS[(π/...
Trigonometry - Verify the identities. 1.) √1-COSθ/1+COS&#...
Trigonometry - 1.Solve tan^2x + tan x – 1 = 0 for the principal value(s) to...
TRIG.............. - Q.1 Prove the following identities:- (i) tan^3x/1+tan^2x + ...
Trigonometry - How do you verify the equation is an identity? Tan^2x-tan^2y=sec^...

For Further Reading

First Name:
School Subject:
Answer: