Maths equations

Question 1

State the sine rule

Answer 1

a/sinA = b/sinB = c/sinC

Question 2

State the cosine rule

Answer 2

a^2= b^2 + c^2 - 2bc cosA

Question 3

State the equation for area of a triangle (trig)

Answer 3

1/2 ab sinC

Question 4

State the equation that links density, mass and volume

Answer 4

Density = mass/volume

Question 5

State the equation for area of a rectangle

Answer 5

Length x width

Question 6

State the equation for the area of a parallelogram

Answer 6

Base x height

Question 7

State the equation for the area of a triangle

Answer 7

1/2 base x height

Question 8

State the equation for the area of a trapezium

Answer 8

1/2 (a + b) h

Question 9

State the equation for the area of a circle

Answer 9

Pi r^2

Question 10

State the equation linking speed, distance and time

Answer 10

Speed = distance/time

Question 11

State the equation linking pressure, force and area

Answer 11

Pressure = force/area

Question 12

State the equation for the volume of a cylinder

Answer 12

Pi r^2 h

Question 13

State the equation for the volume of a pyramid

Answer 13

1/3 x area of base x height

Question 14

State the equation for the circumstance of a circle

Answer 14

Pi d

Question 15

State Pythagoras’ theorem

Answer 15

A^2 + b^2 = c^2