Pre Calc Identities

Question 1

Quotient identities

Answer 1

Tan x = sin x / cos x

Cot x = cos x/ sin x

Question 2

Reciprocal identities

Answer 2

Sin x = 1 / csc x 
Csc x = 1 / sin x 
Cos x = 1 / sec x 
Sec x = 1 / cos x 
Tan x = 1 / cot x 
Cot X = 1 / tan x

Question 3

Pythagorean identities

Answer 3

Sin^2 x + cos^2 x = 1

1 + tan^2 x = sec^2 X

1 + cot ^2 x = csc^2 x