Maths

Question 1

What is the formula for the area of a triangle using sin?

Answer 1

Area = 1/2 x ab x sin c

Question 2

complete the index laws:

am x an =
am / an =
(am)n =

Answer 2

am+n
am-n
a*mxn

Question 3

What is the formula for the area of a circle?

Answer 3

area = pi x r*2

Question 4

What is the formula for the area of a trapezium?

Answer 4

area = 1/2 (a +b)h

Question 5

What is the formula for the circumference of a circle?

Answer 5

circumference = pi x D

Question 6

What is pythagoras’ theorem?

Answer 6

a2 + b2 = c*2

Question 7

How do you find the volume of a prism?

Answer 7

volume = area of cross section x length

Question 8

What is the formula for speed?

Answer 8

speed = distance/time

Question 9

What is the formula for density?

Answer 9

density = mass/volume

Question 10

What are the trigonometry formula triangles?

Answer 10

sin(A) = opposite/hypotenuse
cos(A) = adjacent/hypotenuse
tan(A) = opposite/adjacent

Question 11

what’s the rule to evaluate a negative indice?

x*-a

Answer 11

1/x*a

Question 12

What is the cosine rule for finding a side?

Answer 12

a2 = b2 + c*2 - 2bccosA

Question 13

What is the sine rule?

Answer 13

a/sinA = b/sinB = c/sinC