Zet - What are the Basic Trigonometric Functions?

What are the Basic Trigonometric Functions?

  1. Sine (sin)

    • Notation: sin⁡(θ)\sin(\theta)
    • Definition: sin⁡(θ)=oppositehypotenuse\sin(\theta) = \frac{\text{opposite}}{\text{hypotenuse}}

  2. Cosine (cos)

    • Notation: cos⁡(θ) \cos(\theta)
    • Definition: cos⁡(θ)=adjacenthypotenuse\cos(\theta) = \frac{\text{adjacent}}{\text{hypotenuse}}

  3. Tangent (tan)

    • Notation: tan⁡(θ)\tan(\theta)
    • Definition: tan⁡(θ)=oppositeadjacent\tan(\theta) = \frac{\text{opposite}}{\text{adjacent}} when using angle at B
ABCAdjacentOppositeHypotenuse

and of course Pythagoras’ thereom

a2+b2=c2a^2 + b^2 = c^2
abc

#maths #triganometry