Advertisement Upgrade to remove ads

sin(0)

√(0/4) = 0

sin(30)
sin(π/6)

√(1/4) = 1/2

cos(30)
cos(π/6)

(√3)/2

tan(30)
tan(π/6)

1/(√3)

sin(45)
sin(π/4)

(√2)/2

cos(45)
cos(π/4)

(√2)/2

tan(45)
tan(π/4)

1

sin(90)
sin(π/2)

1

cos(90)
cos(π/2)

0

tan(90)
tan(π/2)

undefined

sinθ

opp/hyp

cosθ

adj/hyp

tanθ

opp/adj
sinθ/cosθ

secθ

1/cosθ

cscθ

1/sinθ

cotθ

1/tanθ
cosθ/sinθ

Range of sin^(-1)

(-π/2)≤ sin^(-1)θ ≤ (π/2)

Range of cos^(-1)

0 ≤ cos^(-1)θ ≤ π

Range of tan^(-1)

(-π/2)≤ tan^(-1)θ ≤ (π/2)

(sin x)(csc x) =1
Reciprocal identity

(sin x)(csc x) =1

(cos x)(sec x) = 1
Reciprocal identity

(cos x)(sec x) = 1

(tan x)(cot x) = 1
reciprocal identity

(tan x)(cot x) = 1

sin 2x = (2 sin x)(cos x)

sin 2x = (2 sin x)(cos x)

cos 2x = (cos²x) - (sin²x)

cos 2x = (cos²x) - (sin²x)

cos 2x = (2 cos²x) -1

cos 2x = (2 cos²x) -1

(sin²x) + (cos²x) = 1

(sin²x) + (cos²x) = 1

1 + tan²x = sec²x

1 + tan²x = sec²x

1 + cot²x = csc²x

1 + cot²x = csc²x

(sin(angle))/(opposite side) = constant
Law of Sines

(sin(angle))/(opposite side) = constant

a² = b² + c² - 2bc(cos A)
Law of Cosines

a² = b² + c² - 2bc(cos A)

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set