Formula

Question 1

How do you correctly label a right angled triangle- A/O/H?

Answer 1

H is the top side, A is the base, O is the vertical height

Question 2

If you have a right angled triangle, what do you use to work out the missing sides or angles?

Answer 2

Trigonometry (SOH, CAH, TOA)

Question 3

If you are using the adjacent and hypotenuse, which trigonometric ratio do you use?

Answer 3

CAH

Question 4

If you are using the opposite and hypotenuse, which trigonometric ratio do you use?

Answer 4

SOH

Question 5

If you are using the opposite and adjacent, which trigonometric ratio do you use?

Answer 5

TOA

Question 6

What is the sine rule?

Answer 6

a/sinA = b/sinB = c/sinC

Question 7

What is the cosine rule?

Answer 7

a^2 = b^2 + c^2 -2bcCosA

Question 8

You use the sine rule when…

Answer 8

You have two sides and an angle opposite to one of the two sides or one side and any two angles.

Question 9

You use the cosine rule when,,,

Answer 9

You have a triangle with two sides and an angle, or three sides

Question 10

What is the formula to find the area of any triangle?

Answer 10

1/2abSinC

Question 11

What is the formula for the area of a trapezium?

Answer 11

1/2 (a + b) h

Question 12

What is the cross section of a prism?

Answer 12

The cross section of a prism would be the face

Question 13

What is the formula for the cross section of a prism?

Answer 13

V = area of base x height