Trig Identities

Use the unit circle to find: sin 150 degrees

• -1/2
• -√3/2
• 1/2
• √3/2

Tags

CCSS.HSF.TF.A.2

Use the unit circle to find:: cos 90 degrees

• 0
• 1
• -1
• undefined

Tags

CCSS.HSF.TF.A.2

Use the unit circle to find:: tan 270 degrees

• 0
• 1
• -1
• undefined

Tags

CCSS.HSF.TF.A.2

Use the unit circle to find:: sec 300 degrees

• 2√3/3
• -2√3/3
• 2
• -2

Tags

CCSS.HSF.TF.A.2

Now, look at the sum and difference formulas. Finish this statement: tan (A + B) =

Tags

CCSS.HSF.TF.C.9

Tags

CCSS.HSF.TF.C.9

Tags

CCSS.HSF.TF.C.9

Use a sum or difference formula to find an exact value of sin 105º

Tags

CCSS.HSF.TF.C.9

• 0.2588

• 0.9218

Tags

CCSS.HSF.TF.C.9

And, now for some puzzles. According to the reciprocal identities, what is csc(x) equivalent to?

• 1/sin(x)

• 1/tan(x)

• sin(x)

• 1/cos(x)

Tags

CCSS.HSF.TF.C.8

CCSS.HSG.SRT.C.7