PreCalc Sine & Cosine Angles Practice (Day 1)

Based on your unit circle sin(30^o)=

• √2/2

• 1/2

• 1

• √3/2

Tags

CCSS.HSF.TF.A.2

Based on your unit circle cos(30^o)=

• 1

• 1/2

• √3/2

• √2/2

Tags

CCSS.HSF.TF.A.2

Based on your unit circle sin(0^o)=

• 1
• -1
• 0
• 1/2

sin π/4

• √2∕2
• 1/2
• √3/2
• 0

cos 5π/6

• -1/2
• 1/2
• √3/2
• -√3/2

cos 4π/3

• -√3/2
• √3/2
• 1/2
• -1/2

sin 7π/6

• 1/2
• -1/2
• √3/2
• -√3/2

What is the exact coordinates of  3π/4 on the unit circle?

• (−√2∕2, √2∕2)
• (−√2∕2, −√2∕2)
• (−√3∕2, −√2∕2)
• (√2∕2, −√2∕2)

• -√3/2
• -½
• -√2/2
• -1

• 1
• -1
• 0
• √2/2