Trigonometry And Consumer Arithmatic Flashcards
0
Q
What is the cosine rule for finding a side
A
C2 = a2 +b2 -2abCosC
1
Q
What is the sine rule
A
A/sinea = b/sineb = c/sinec
2
Q
What is the cosine rule for finding an angle
A
CosC= a2+b2 -c2/2ab
3
Q
How do you find the area of a non right angled triangle
A
1/2 absinec
4
Q
How do you find simple interest
A
I=PRT
5
Q
How do you find compound interest
A
A= p (1+r)n
6
Q
What is reducible interest
A
You are charged interest on the amount left to pay
7
Q
How do you find depreciation
A
A= p(1-r) n
