Hoofdstuk 4

Question 1

Oppervlakte driehoek

Answer 1

1/2 ac sin B
1/2 ab sin C
1/2 bc sin A

Question 2

Sinus regel in willekeurige hoek

Answer 2

a / sinA = b / sin B = c / sin C

Question 3

Cosinusregel in willekeurige hoek

Answer 3

a2 = b2 + c2 - 2bc . cos A
b2 = c2 + a2 - 2ca . cos B
c2 = a2 + b2 - 2ab . cos C