Unit Circle

Draw right angled triangle for finding sin(45)

Draw right angled triangle for finding cos(60)

What is degree equivalent of 4pi/3?

What is the radian equivalent of 300 degrees?

sin 150

• -1/2
• -√3/2
• 1/2
• √3/2

cos 90

• 0
• 1
• -1
• undefined

tan 225

• √2/2
• -√2/2
• 1
• -1

Tags

CCSS.HSF.TF.A.2

1/cos (300)

• -2
• 2
• 2√3/3
• -2√3/3

cos 135

• √2/2
• -√2/2
• √3/2
• -√3/2

Tags

CCSS.HSF.TF.A.2

What are the minimum and maximum values for 3cos(2x)

• 3

• 3 and -3

• 2 and -2

• 2