Trigonometric Fuctions of Real Numbers

cos t = ?

x

Trigonometric Fuctions of Real Numbers

sin t = ?

y

Trigonometric Fuctions of Real Numbers

tan t = ?

y/x, (x ≠ 0)

Trigonometric Fuctions of Real Numbers

sec t = ?

1 / x ( x ≠ 0 )

Trigonometric Fuctions of Real Numbers

csc t = ?

1 / y,  ( y ≠ 0 )

Trigonometric Fuctions of Real Numbers

cot t = ?

x / y , ( y ≠ 0 )

The Pythagorean Identites

sin² t + cos² t = ?

1

The Pythagorean Identites

tan² t + 1 = ?

sec² t

The Pythagorean Identites

cot² t + 1 = ?

csc² t

The Opposite-Angle Identites

cos(-t) = ?

cos t

The Opposite-Angle Identites

sin(-t) = ?

-sin t

The Opposite-Angle Identites

tan(-t) = ?

-tan t

Periodicity of Sine and Cosine

sin(t + 2 ∏) = ?

sin t

Periodicity of Sine and Cosine

cos(t + 2 ∏) = ?

cos t