Trigonometric Basics Flashcards
1
Q
Pythagorean Identities
A
sin²(x) + cos²(x) = 1
sec²(x) - tan²(x) = 1
csc²(x) - cot²(x) = 1
2
Q
Double Angle Formulas
A
sin2θ = 2sinθ • cosθ cos2θ = cos²θ - sin²θ
3
Q
inverse of csc(x)
A
1 / sin(x)
4
Q
inverse of sec(x)
A
1 / cos(x)
5
Q
inverse of cot(x)
A
1 / tan(x)
