Trig Identities

tanθ = 

• 1/cosθ

• 1/sinθ

• cosθ/sinθ

• sinθ/cosθ

Tags

CCSS.HSF.TF.A.4

cotθ =

• 1/cosθ

• 1/cscθ

• 1/secθ

• 1/tanθ

Tags

CCSS.HSF.TF.A.2

cotθ =

• cosθ/sinθ

• sinθ/cosθ

• tanθ

• 1/cosθ

Tags

CCSS.HSF.TF.A.2

cscθ=

• 1/cosθ
• 1/sinθ
• 1/tanθ
• 1/secθ

Tags

CCSS.HSF.TF.A.2

secθ=

• 1/cosθ
• 1/sinθ
• 1/tanθ
• 1/cscθ

Tags

CCSS.HSF.TF.A.2

Get cos²θ alone:

sin²θ + cos²θ = 1

• cos²θ = 1 - sin²θ

• cosθ = 1 + sin²θ

• cosθ = 1 - sinθ

• cos²θ = Adj/hyp

Get tan²θ alone:

1 + tan²θ = sec²θ 

• tan²θ = sec²θ + 1

• tan²θ = sec²θ - 1

• tanθ = secθ - 1

• tan²θ = opp/adj

Please select the correct solution

• csc² x
• cot² x
• sin² x
• sec² x

Please select the correct solution cos ² x + sin ² x=  

• 1
• csc ² x + sec ² x
• sin ² x
• 1 - sin ² x

Which of the following is an incorrect identity?

• sin²x + cos²x = 1

• tan(x) = sin(x)/cos(x)

• cot(x) = cos(x)/sin(x)

• 1 + cot²x = sec²x