Further Trigonometry

Question 1

Right angle

Answer 1

90° angle (a quarter turn)

Question 2

Tangent

Answer 2

A function used in trigonometry. Uses opposite and adjacent sides in right angled triangles

Question 3

Angle

Answer 3

Where two lines meet at a point, this describes the rotation from one of the lines to the other.

Question 4

Opposite

Answer 4

The side not touching the angle

Question 5

Adjacent

Answer 5

The side next to the angle

Question 6

Hypotenuse

Answer 6

The longest side in a right angled triangle (opposite the right angle)

Question 7

Sine

Answer 7

A function used in trigonometry. Uses opposite and hypotenuse sides in right angled triangles

Question 8

Cosine

Answer 8

A function used in trigonometry. Uses hypotenuse and adjacent sides in right angled triangles

Question 9

Triangle

Answer 9

A three sided shape

Question 10

Significant figures

Answer 10

The digits in a number that are needed to specify the number to a required degree of accuracy. Additional zero digits may also be needed.

Examples: To the nearest thousand, the numbers 125 000, 2 376 000 and 22 000 have 3, 4 and 2 significant figures respectively; to 3 significant figures 98.765 is written 98.8

Question 11

Bearing

Answer 11

An angle measured from north and clockwise

Question 12

Scalene triangle

Answer 12

A triangle where all sides are different and all angles are different