Pythagorean Theorem and Trigonometric Functions

In what type of triangle do we use Pythagoras' Theorem?

• isosceles triangle

• scalene triangle

• right angled triangle

• any triangle

In what type of triangle do we use Trigonometry?

• right angled triangle

• isosceles triangle

• scalene triangle

• any triangle

There exists a special right angled triangle whose sides are 3cm, 4cm and ...?

• 5cm

• 6cm

• 13cm

• 7cm

A special right angled triangle has sides 12cm and 13cm. What is the length of the 3rd side?

• 5cm

• 11cm

• 14cm

• 15cm

Which side is the hypotenuse?

• Any of the 3 sides

• The longest side

• The one opposite the angle

• The one adjacent to the angle

Trigonometry is about the ratio of the ...

• angles

• sides

• triangles

• right angled triangles

How do you recognise the opposite side?

• It is opposite the angle involved

• it is opposite the right angle

• it is opposite the hypotenuse

• there are no sides called opposite

A right angled triangle has sides 6cm, 8cm and 10cm long. Which side is the hypotenuse?

• the 10cm

• the 6cm

• the 8cm

• in a right angled triangle there is no hypotenuse

Trigonometry is used when

• 3 sides are involved

• 1 angle and 2 sides are involved

• 3 angles are involved

• you need to draw a circle

Pythagoras' theorem is used when

• 3 sides are involved

• 1 angle 2 sides are involved

• 2 angles 1 side are involved

• 3 angles are involved