The sine and cosine rule Flashcards
1
Q
What is the sine rule?
A
a/sin(A)=b/sin(B)=c/sin(C)
2
Q
What is the cosine rule?
A
cos(A)=(b²+c²-a²)/(2bc)
3
Q
What does Pythagoras’ theorem state?
A
In a right angled triangle, the square of the hypotenuse is equal to the sum of the squares of the other two sides
4
Q
Give the lengths of two sides and the angle between them, how the area of a triangle be calculated?
A
ab*sin(C)/2
