Six Trig Finctions

Honelako gehiago

Ratio

Li Jiaxin‑k egina

THE BIOSPHERE

Alejandro González‑k egina

The Six Domains of Mathematics

Jennifer Lewis‑k egina

ANTIBODY AND ANTIGEN

Yolanda Soto‑k egina

Six Trig Finctions

Tan

Y/X

Half Angle: tan^2 u=1-cos(2u)/1+cosine(2u)

Reciprocal: tan u=1/cot u

Pythagorean: 1+tan^2u=sec^2u

Cosine

X/r

Half Angle: cosine^2 u=1+cosine(2u)/2

Reciprocal: cos u=1/sec u

Sine

Y/r

Half Angle: sine^2 u=1-cosine(2u)/2

Reciprocal: sine u=1/cosine u

Subtopic

Pythagorean: sine^2 u + cosine^2u=1

Cotangeant

X/Y

Reciprocal: cot u = 1/tan u

Pythagorean: 1 + cot^2 u = csc^2 u

Secant

r/X

Reciprocal: sec u = 1/ cos u

Pythagorean: sec^2 u = 1 + tan^2 u

Cosecant

r/Y

Reciprocal: csc u = 1/sin u

Pythagorean: csc^2 u = 1 + cot^2 u