Simplifying Trig Expressions

Front

What is the Pythagorean identity for sine and cosine?

Back

sin²x + cos²x = 1

Front

What is the definition of tangent in terms of sine and cosine?

Back

tanx = sinx / cosx

Front

What is the relationship between secant and cosine?

Back

secx = 1 / cosx

Front

What is the relationship between cosecant and sine?

Back

cscx = 1 / sinx

Front

What is the definition of cotangent in terms of sine and cosine?

Back

cotx = cosx / sinx

Front

What is the double angle formula for sine?

Back

sin(2x) = 2sinx cosx

Front

What is the double angle formula for cosine?

Back

cos(2x) = cos²x - sin²x

Front

What is the identity for tangent squared in terms of secant?

Back

tan²x + 1 = sec²x

Front

What is the identity for cotangent squared in terms of cosecant?

Back

1 + cot²x = csc²x

Front

What is the sum of angles formula for sine?

Back

sin(a + b) = sin(a)cos(b) + cos(a)sin(b)