266 Answered Questions for the topic trigonometric identities

Trigonometric Identities

04/21/14

#### verify the identity

sin3x - cos3x/ sinx- cosx= 1 +(sinx)(cosx)
Trigonometric Identities

04/17/14

#### Proving Other Trigonometric Identities

Prove that:   1 + cos x =     sin x        sin x        1 - cos x
Trigonometric Identities Simplifying Expressions

04/10/14

#### simplify using fundamental identities......4cosXtanX

Use the fundamental identities to simplify the expression
Trigonometric Identities

04/10/14

#### trigonemtric identity question

how does sinx+cosx when squared equal to sin^2x + 2sinxcosx + cos^2x ?
Trigonometric Identities

04/07/14

#### Solving trig identities

Restriction from [0, 2pi).   4cos2x+2sin2x=3
Trigonometric Identities

04/07/14

#### Solving trig identities

[0, 2pi) Restriction.   2sin2Θ=1
Trigonometric Identities

04/07/14

#### Solve trig identities.

[0, 2pi) restriction.   sinΘcosΘ=cosΘ
Trigonometric Identities

04/07/14

#### Solving trig identities

No restrictions on Θ. cos2Θ-1=0
Trigonometric Identities

04/05/14

#### Verify identities

tan2x =  sin2x 1+tan2x
Trigonometric Identities

04/05/14

#### Simplify trig identities

(secx-1)(1+cosx)  =tanx         sinx
Trigonometric Identities

04/05/14

#### Simplify trig identities

1+cosx  =   sinx  sinx          1-cosx
Trigonometric Identities Trigonometry

04/04/14

#### Trig Identities

csc2xtan2x-1
Trigonometric Identities

03/12/14

#### How to solve this?

complete the identity: sin t/(1+sin t) - sin t/(1-sin)= ?1.) sec (t) csc (t)2.) sin (t) tan (t)3.) 1 + cos (t)4.) -2tan^2 (t)
Trigonometric Identities

03/11/14

#### simplify 1/cos^2x-1/cot^2x

simplify using trig identities
Trigonometric Identities

03/10/14

#### Trigonometry

I figured this out using my calculator but I need help solving through it without.  (cosX)/(1+sinX)+tanX
Trigonometric Identities

03/10/14

#### Trigonometry

tanU-1/tanU+1=1-cotU/1+cotU
Trigonometric Identities

03/10/14

#### Trigonometry

csc^2V-cosVsecV=cot^2V
Trigonometric Identities Algebra Algebra Trigonometry

03/01/14

#### Trig Identities help

Prove that 2sin(x) - cos(x)   can be written as asin(x-p)
Trigonometric Identities Precalculus Trigonometry Identities

02/09/14

#### verify the identity (cosx-cscx)(cosx+1)=-sinx

i need this for my test tomorrow and my teacher isnt asnwering my emails
Trigonometric Identities Math Pre Cal

02/06/14

#### please, prove that 1-2cos^2x = tan^2x-1/tan^2x+1

The worksheet deals withb trigonometric identities and we have to prove each of them. I'm stumped on this one. Please, if you could help, I'd highly appreciate it!
Trigonometric Identities Math Trigonometry Math Help

01/07/14

#### Find the value of ALL the other five trigonometric functions, given tanx= 4/11, secx<0.

Thanks for the help! If you could please show all your work? Thanks again!
Trigonometric Identities Trigonometry Trig Quadratic Formula

01/06/14

#### Use the quadratic formula to find all solutions in the interval [0,2pi): tan^2x-6tanx+4=0

This is for my trig class, thanks for the help! If you could, could you please show all your work? Thanks again!
Trigonometric Identities Trigonometry Trig Solutions

01/06/14

#### Find all solutions in the interval [0,2pi): sin2x=cosx

This is for my trig class, thanks for the help! If you could, could you please show all your work? Thanks again!
Trigonometric Identities Math Trigonometry Math Help

01/06/14

#### Find all solutions in the interval [0,2pi): tan^2x+(sqrt3 - 1)tanx-sqrt3 = 0

This is for my trig class, thanks for the help! If you could, could you please show all your work? Thanks again!
Trigonometric Identities Math Trigonometry Algebra

01/06/14

#### Write sin(sin^-1x-cos^-1x as an algrebraic expression in x.

This is for my trig class, thanks for the help! If you could, could you please show all your work? Thanks again!

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