Trigonometry with Special Triangles

Front

If cosA = √3/2, then A = ?

Back

60°

Front

Find sin45°

Back

1/√2

Front

Find csc60°

Back

2/√3

Front

Find tan45°

Back

1

Front

Find sin30°

Back

1/2

Front

What is the value of sin60°?

Back

√3/2

Front

What is the value of cos30°?

Back

√3/2

Front

What is the value of tan30°?

Back

1/√3

Front

What is the relationship between sin and cos in a right triangle?

Back

sin(θ) = opposite/hypotenuse, cos(θ) = adjacent/hypotenuse.

Front

What is the Pythagorean identity?

Back

sin²(θ) + cos²(θ) = 1.