Special Right Triangles and Trigonometry

What is the sine of angle C?

• 7/24

• 7/25

• 24/25

• 25/24

What is the length of side x?

• 6.57 cm

• 7 cm

• 7.44 cm

• 26.33 cm

What type of special triangle is this?

• 45°-45°-90°

• 30°-60°-90°

• Equiangular

• Equilateral

Find x.

• 30°

• 60°

• 90°

• 180°

Find x.

• 10

• √3

• 5

• 10√3

I have been given the short leg in this 30-60-90 triangle.  How do I find the length of the hypotenuse?

• Multiply 4 by 2

• Multiply 4 by √3

• Multiply 4 by √2

• Divide 4 by √3

I have been given the hypotenuse in this 30-60-90 triangle.  How do I find the short leg?

• Multiply 6 by 2

• Multiply 6 by √3

• Divide 6 by 2

• Divide 6 by √3

What is the cosine of θ?

• 15/8

• 15/17

• 17/15

• 8/15

What is the tangent of angle C?

• 7/25

• 25/7

• 7/24

• 24/7

If tanθ = 3/4, what is cosθ?

• 3/5

• 4/5

• 4/3

• not enough information