learn.howToCalculate
learn.whatIsHeading
Trigonometric functions (sin, cos, tan, csc, sec, cot) relate the angles and sides of triangles. They extend to the unit circle for all angles and are fundamental in physics, engineering, navigation, signal processing, and wave analysis.
Steg-för-steg-guide
- 1In a right triangle: sin θ = opposite/hypotenuse, cos θ = adjacent/hypotenuse, tan θ = opposite/adjacent
- 2Mnemonic: SOH-CAH-TOA
- 3Unit circle definition: sin θ = y-coordinate, cos θ = x-coordinate, at angle θ from positive x-axis
- 4Reciprocals: csc = 1/sin, sec = 1/cos, cot = 1/tan
Lösta exempel
Ingång
sin 30°
Resultat
0.5
sin(π/6) = 1/2
Ingång
cos 60°
Resultat
0.5
cos(π/3) = 1/2
Ingång
tan 45°
Resultat
1
tan(π/4) = sin/cos = 1
Redo att beräkna? Prova den kostnadsfria Trig Functions-kalkylatorn
Prova själv →