pre calc Ch 4.1-4.4 MU TEST

Find a coterminal angle to -27 degrees.

• -387
• 27
• 323
• -393

Find an angle coterminal with an angle measuring 17π / 4 radians.

• π ∕ 3
• 5π ∕ 4
• π ∕ 4
• 13π ∕ 4

Find an angle coterminal with an angle which measures 11π ∕ 3.

• 17 π / 3
• 4π ∕ 3
• π ∕ 3
• 8π ∕ 3

Find the reference angle for an angle measuring θ = -310⁰

• 50⁰
• -50⁰
• 20⁰
• 40⁰

Convert from radians to degrees:  7π ∕ 4

• 330°
• 45°
• 315°
• 75°

Convert from degrees to radians:  10°

• π ∕ 18
• π ∕ 180
• 3π ∕5
• 2π ∕ 36

If cos (20⁰) = sin(x)
then x =

• 20
• 40
• 70
• 80

If cot (73⁰) = tan (x⁰)
then x =

• tan (17⁰)
• 17⁰
• -73⁰
• -17⁰

Simplify (secx-1)(secx+1)

• tan²x
• sinx
• cot²x
• cosx

Using trig identities, if tanθ= -9/40, and the cosine is negative, find sin θ and cosθ.

• A  sinθ= -9 and cosθ= 40
• B  sinθ= 9 and cosθ= -40
• C  sinθ=-9/41 and cosθ= 40/41
• D  sinθ= 9/41 and cosθ= -40/41

Tags

CCSS.HSF.TF.C.8