Gondel twee

Question 1

Tegengestelde hoeken

Answer 1

OM van IV naar I kwadrant te gaan
Sin: sin(α)->sin(-α)=-sin(α)
Cos: cos(α)->cos(-α)=cos(α)
Tan: tan(α)->tan(-α)=-tan(α)
Cot: cot(α)->cot(-α)=-cot(α)

Question 2

Supllementaitre hoeken

Answer 2

Som 180°
Om van II kwadrant naar I kwadrant
Sin: sin(180°-α)->sin(α)
Cos: cos(180°-α)->-cos(α)
Tan: tan(180°-α)->-tan(α)
Cot: cot(180°-α)->-cot(α)

Question 3

Anti suplementaire hoeken

Answer 3

Verschil 180°
Om van III nar I kwadrant
Sin: sin(180°+α)->-sin(α)
Cos: cos(180°+α)->-cos(α)
Tan: tan(180°+α)->tan(α)
Cot: cot(180°+α)->cot(α)

Question 4

Anti complementaire hoeken

Answer 4

Verschil 90°
Om van I naar II kwadrant
Sin: sin(90°+α)->cos(α)
Cos: cos(90°+α)->-sin(α)
Tan: tan(90°+α)->-cot(α)
Cot: cot(90°+α)->-tan(α)

Question 5

Complementaire hoeken

Answer 5

Som 90°
Bisectrice zoeken
Sin: sin(90°-α)->cos(α)
Cos: cos(90°-α)->sin(α)
Tan: tan(90°-α)->cot(α)
Cot: cot(90°-α)->tan(α)