Rules

Question 1

Sin is

Answer 1

Opposite/Hypotenuse

Question 2

Cos is

Answer 2

Adjacent/Hypotenuse

Question 3

Tan is

Answer 3

Opposite/ adjacent

Question 4

Pythagoras

Answer 4

a^2 + b^2 = c^2

Question 5

Sin Rule

Answer 5

A= angle 
a= side 

both a’s are opposites

sinA / a = sinB / b = sinC / c

a / sinA = b / sinB = c / sinC

Question 6

cosine rule

Answer 6

side = a
angle = A
both a’s are opposite each other

a^2 = b^2 + c^2 - 2bc x cos(A)

Question 7

area and circumference of a circle

Answer 7

area= π x r^2
circumference = πd (diameter)

Question 8

volume of a prism

Answer 8

cross section area x length

Question 9

volume of pyramid

Answer 9

(length x width x perpendicular height) / 3

Question 10

volume and surface area of cylinder

Answer 10

volume = π(r^2)h

surface area = πdh + 2π(r^2)

Question 11

volume and surface area of sphere

Answer 11

volume = 4/3 π(r^3)

surface area = 4π(r^2)

Question 12

volume and surface area of a hemisphere (half a sphere)

Answer 12

volume = 2/3 π(r^3)

surface area = 3π(r^2)

Question 13

volume and surface area of a cone

Answer 13

volume = 1/3 π(r^2) h

surface area = πrh + π(r^2)

Question 14

volume and surface area of a frustrum

Answer 14

volume = volume of big cone - volume of small cone

surface area = curved length + both circles