Trigonometry with Special Triangles

Front

What is the value of sec(60°)?

Back

2

Front

Find sin(45°).

Back

1/√2

Front

If cos(A) = √3/2, what is the value of A?

Back

60

Front

Find cos(45°).

Back

√2/2

Front

What is the definition of a special triangle in trigonometry?

Back

A special triangle is a triangle with specific angle measures (30°, 45°, 60°) that allows for easy calculation of trigonometric ratios.

Front

What are the sine values for the angles 30°, 45°, and 60°?

Back

sin(30°) = 1/2, sin(45°) = 1/√2, sin(60°) = √3/2.

Front

What are the cosine values for the angles 30°, 45°, and 60°?

Back

cos(30°) = √3/2, cos(45°) = √2/2, cos(60°) = 1/2.

Front

What are the tangent values for the angles 30°, 45°, and 60°?

Back

tan(30°) = 1/√3, tan(45°) = 1, tan(60°) = √3.

Front

What is the relationship between sine and cosine for complementary angles?

Back

sin(θ) = cos(90° - θ).

Front

What is the Pythagorean identity in trigonometry?

Back

sin²(θ) + cos²(θ) = 1.