Finding Inverses of Arc Trig Functions

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

• x = tan^–1(24/7)

• x = tan^–1(7/24)

• x = tan^–1(25/7)

• x = tan^–1(7/25)

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)

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 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)

Match the following definitions with the correct word

• Arcsine

• The --------- of a number between 0 and 1 is the

  acute angle whose sine is that number.

• Arccosine

• The ---------- of a number between 0 and 1 is the

  acute angle whose cosine is that number.

• Arctangent

• The ----------- of a positive number is the acute

  angle whose tangent is that number.

The best strategy for creating a(n) ​ (a)   function is to switch the x and the ​ (b)  

• inverse

• y

• cosine

• tangent

• h

• k

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

• x =tan^–1(51/85)

• x = tan^–1(85/51)

• x = tan^–1(51/68)

• x = tan^–1(68/51)

• -π/3
• 4π/3
• -2π/3
• 2π/3

• 0
• π/2
• 2π
• 3π

Q1. What is the angle in radians for 135 degrees?

• A) 3π/4

• B) π/4

• C) 5π/4

• D) -3π/4