Inverse Sine and Cosine

What is the length of x?

• 7.43

• 16.50

• 3.88

• 4.59

If you are given the opposite and hypotenuse lengths of a right triangle, what trig function is used to find the missing angle?

• sine

• cosine

• inverse sine

• inverse cosine

Which equation is used to solve for x?

• x = cos (30/40)

• x = inverse cos (30/40)

• x = sin (30/40)

• x = inverse sin (30/40)

Solve for x.

• 7.73

• 11.12

• 11.51

• 7.68

Match the following definitions with the correct word

• Arctangent

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

  acute angle whose cosine is that number.

• Arcsine

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

  acute angle whose sine is that number.

• Arccosine

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

  angle whose tangent is that number.

Which equation is used to solve for a?

• a = cos (6750/8100)

• a = sin (6750/8100)

• a = inverse cos (6750/8100)

• a = inverse sin (6750/8100)

Which inverse trig function would you use to find the measure of Angle A?

• inverse sine

• inverse cosine

• inverse tangent

• It is not possible to determine m<A

Use inverse trig ratios (SOH CAH TOA) to solve for the missing angle

• 33°

• 49°

• 39°

• 41°

Sam views a deer from a height of 45 feet. The horizontal distance between the tourist and the deer is 130 feet. At what angle (x) should the tourist hold his camera to photograph the deer? Round your answer to the nearest degree.

• 19^o

• 45^o

• 71^o

• 138^o

Choose the correct letter below.

• A

• B

• C

• D