End Of Year Formulas

Question 1

What are the three formulas for Speed, Distance, Time?

Answer 1

S=D/T
D=SxT
T=D/S

Question 2

How do you work out a percentage?

Answer 2

Divide by the bottom and times by the top

Question 3

What is the easiest way to remember the formulas for sin, cos, tan

Answer 3

Soh, Cah, Toa

Question 4

What are the formulas for sin, cos, tan

Answer 4

Sin=O/H
Cos=A/H
Tan=O/A

Question 5

How do you find the sin, cos, or tan of an angle?

Answer 5

Sin-1(…)
Cos-1(…)
Tan-1(…)

Question 6

How do you use sin, cos, or tan to work out the length of a triangles side if you already have the angle?

Answer 6

You wold sin, cos, or tan the angle and then times the number you get with the bottom of the fraction

Question 7

If you times 2 negatives what does the number become?

Answer 7

A positive

Question 8

If you times 2 positives what does the number become?

Answer 8

A positive

Question 9

If you times 1 positive and 1 negative what does the number become?

Answer 9

A negative

Question 10

If you times a letter by itself what do you get?

Answer 10

The letter squared

Question 11

If you square a number what have you done to it?

Answer 11

Times it by itself

Question 12

What is a mode?

Answer 12

The most frequent number on a list

Question 13

What is a median?

Answer 13

The middle number on a list

Question 14

What is the mean?

Answer 14

Adding all the numbers, ad then dividing them with the total AMOUNT of numbers

Question 15

What is Pythagoras Theorum?

Answer 15

c2=a2+b2

Question 16

What are significant figures?

Answer 16

When an answer has to contain a certain amount of digits after the first zero

Question 17

What is the formula for finding the circumference of circle?

Answer 17

C=Pi x D(iameter)

Question 18

How do you find the radius of a circle?

Answer 18

Divide the diameter by 2

Question 19

How do you find the diameter of a circle?

Answer 19

divide the circumference by Pi