577 Answered Questions for the topic Trig

01/05/14

#### Verify: 1+cosx/sinx+sinx/1+cosx=2cscx

This is for my trig class, thanks for the help!

01/05/14

#### Verify: cosusinv=1/2[sin(u+v)-sin(u-v)

This is for my trig class, thanks for the help!

01/05/14

#### Use the double angle formulas to determine: A. cos120degrees and B. tan300degrees

This is for my trig class, thanks for the help!

01/05/14

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

This is for my trig class, thanks for the help!

01/05/14

#### Verify tan(x+pi/4)= 1+tanx/1-tanx

This is for my trig class, thanks for the help!

01/05/14

#### Simplify (sin42degrees)cos38degrees-(cos42degrees)sin38degrees

This is for my trig class, thanks for the help!

01/05/14

#### Use the sum or difference formulas to determine: A. sin105 degrees and B. tan15 degrees

This is for my trig class, thanks for the help!

01/03/14

#### Use the half angle formulas to determine.

A. sin22.5 degrees and  B. tanpi/12 degrees

01/03/14

#### Given sintheta=4/5, theta lies in Quadrant II, find cos (theta/2)

This is for my trig class. Thanks for the help!

01/03/14

#### Use the power reducing identities to write sin^2xcos^2x in terms of the first power of cosine.

This is for my trig class. Thanks for the help!

01/03/14

#### Rewrite 6(sin5x)cos2x

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01/03/14

#### Rewrite sin(x+pi)+sin(x-pi) as a product.

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01/03/14

#### Find all solutions in the interval [0,2pi): 4sin^2x=1

This is for my trig class. Thanks for the help!

01/03/14

#### 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!

01/03/14

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

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01/03/14

#### 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!

12/31/13

#### Use the sum or difference formulas to determine: A. sin105 degrees B. tan15 degrees

This is for my trig class. Thanks for the help!

12/31/13

#### Rationalize the denominator and simplify: cos^2x / 1 - sinx

This is for my trig class. Thanks for the help!

12/31/13

#### Multiply and simplify: (cscx + 1)(cscx - 1)

This is for my trig class. Thanks for the help!

12/31/13

#### Factor and simplify: sin^4x + (sin^2x)cos^2x

This is for my trig class. Thanks for the help!

12/31/13

#### Simplify sec^2x + csc^2x / csc^2x(1+tan^2x)

This is for my trig class. Thanks for the help!

12/31/13

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

This is for my trig class, thanks for the help!

12/12/13

#### 2sec^x-2sec^2x sin^2x

i've done problems like this before, but i was always able to change a term to cancel out something
Trig Statistics

09/30/13

#### Thirty-five percent of people who own cell phones use their phones to send and receive text message. Choose 4 cell phones owners at random. What is the probabi

Multipulcation Rules and cconditional probability.   Thirty-five percent of people who own cell phones use their phones to send and receive text message. Choose 4 cell phones owners at random.... more

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