TRIGONOMETRY

Question 1

What is the little acronym for Sin O/H,
C A/H, T O/A?

Answer 1

Silly Old/Hitler
Couldn’t Advance/His
Troops Over/ Africa

Question 2

There are 4 labels to a right angle triangle, what are they?

Answer 2

Hypotenuse,
Opposite,
Adjacent,
Angle

Question 3

What is the hypotenuse?

Answer 3

The longest side of a triangle

Question 4

What is the opposite?

Answer 4

The side opposite the angle

Question 5

What is the adjacent?

Answer 5

The remaining side

Question 6

If a right angle exists and it’s hypotenuse is 15cm in length, the opposite is xcm and the angle is 53🪩,
Find the opposite’s side length.

Answer 6

Sin= Opp/Hyp
Pretend it’s a magic triangle,
Cover up opposite and it is Sin X Hypotenuse,
So sin53
X15=
11.9
12cm

Question 7

In a right angle, if we want to find the angle of c and the side length of A-C (adjacent) is 5cm, the side length of B-C (hypotenuse) is 7cm, find the angle.

Answer 7

Couldn’t Advance/His
Cos Adjacent/ Hypotenuse
We need to do the actual calculation of A/H so 5/7, then cos-1 of this= 44.42

Question 8

Use a calculator for this, find the angle at Z if side-length Y-X (opposite) is 5cm and the side length Y-Z (hypotenuse) is 8cm.
Use AI for the -1

Answer 8

38.68