Special Right Triangles Cosine, Sine and Tangent

What is the length of x in this 45-45-90 triangle?

• 4√2

• 4

• 8

• 4√3

Find the value of y.

• 9

• 18√2

• 9√2

• (9√2)/2

Solve for x. 
You will need to use 45-45-90 and 30-60-90 triangles.

• 10√3

• 15

• 5√3

• 15√2

Find a.

• 3

• 3√3

• 6

• 2√3

What is sine of Angle C?

• 12/13

• 5/13

• 5/12

• 12/5

Find sin C
 

• 21/35

• 28/21

• 35/28

• 28/35

• A
• B
• C
• D

Find sinA

• 32/40

• 32/24

• 24/40

• 24/32

• A
• B
• C
• D