Composition and Inverses of Trig Functions

What does it mean to find the inverse of a function?

• the x's and y's are switched

• the x's and y's are divided by 2

• the x's and y's are made negative

• the x's and y's are the same

sin(cos^-1(0))=

• 0

• 1

• π/2

• π

Which equation could be used to solve for the unknown angle?

• x =sin^–1(25/24)

• x = sin^–1(24/25)

• x = sin^–1(25/7)

• x = sin^–1(7/25)

Which equation would you use to solve for the unknown angle?

• x = sin^–1(4/5)

• x = cos^–1(4/5)

• x = cos^–1(5/4)

• x = tan^–1(4/5)

Which equation would you use to solve for the unknown angle?

• x =cos^–1(68/85)

• x = cos^–1(85/68)

• x = cos^–1(51/85)

• x = cos^–1(85/51)

Which equation would you use to solve for the unknown angle?

• x = sin^–1(56/70)

• x = sin^–1(70/56)

• x = sin^–1(70/42)

• x = sin^–1(42/70)

• -π/3
• 4π/3
• -2π/3
• 2π/3

• 0
• π/2
• 2π
• 3π

Q1. What are the possible values of the angle in radians?

• A) 3π/4

• B) π/4

• C) 5π/4

• D) -3π/4

• π/6
• 5π/6
• 7π/6
• 2π