Trigonometric Identities

Front

What is the definition of tan x in terms of sine and cosine?

Back

tan x = sin x / cos x

Front

What is the Pythagorean identity involving sin and cos?

Back

sin² x + cos² x = 1

Front

What is the relationship between sec x and cos x?

Back

sec x = 1 / cos x

Front

What is the relationship between csc x and sin x?

Back

csc x = 1 / sin x

Front

What is the definition of cot x in terms of sine and cosine?

Back

cot x = cos x / sin x

Front

What is the identity for csc² x in terms of cot² x?

Back

csc² x = 1 + cot² x

Front

What is the identity for sec² x in terms of tan² x?

Back

sec² x = 1 + tan² x

Front

What is the definition of cot x in terms of tan x?

Back

cot x = 1 / tan x

Front

What is the relationship between tan x and sin x, cos x?

Back

tan x = sin x / cos x

Front

What is the identity for sin² x in terms of csc² x?

Back

sin² x = 1 / csc² x