IM2 Unit3 Practice Special Right Triangles

Front

What type of special triangle has angles of 30°, 60°, and 90°?

Back

30°-60°-90° triangle

Front

What is the relationship between the sides of a 30°-60°-90° triangle?

Back

The lengths of the sides are in the ratio 1:√3:2.

Front

What type of special triangle has angles of 45°, 45°, and 90°?

Back

45°-45°-90° triangle

Front

What is the relationship between the sides of a 45°-45°-90° triangle?

Back

The lengths of the legs are equal, and the hypotenuse is √2 times the length of a leg.

Front

If sin x = cos y, what is the relationship between x and y?

Back

x + y = 90°.

Front

What is the value of cos 38°?

Back

sin 52°.

Front

What is the value of sin 30°?

Back

1/2.

Front

What is the value of sin 60°?

Back

√3/2.

Front

What is the value of cos 45°?

Back

√2/2.

Front

What is the value of tan 45°?

Back

1.