GCSE Secondary Maths Age 13-17 - Pythagoras & Trigonometry: Trigonometry - Explained

The video tutorial explains how to solve a right-angled triangle problem using trigonometric ratios. It begins by introducing the problem, labeling the triangle's sides, and identifying the hypotenuse and opposite side. The tutorial then demonstrates how to apply the sine ratio to calculate the unknown side, followed by performing the calculation and rounding the result to three significant figures. The video concludes with a discussion on the marks awarded for the solution and emphasizes the straightforward nature of the problem.

What is the given angle in the right-angled triangle ABC?

• 15 degrees

• 23 degrees

• 45 degrees

• 90 degrees

Which side of the triangle is labeled as the hypotenuse?

• Side AB

• Side X

• Side BC

• Side AC

What trigonometric ratio is used to find the length of side AB?

• Cosine

• Secant

• Tangent

• Sine

What is the calculated length of side AB, rounded to three significant figures?

• 8.45 cm

• 7.15 cm

• 6.23 cm

• 5.86 cm

How many marks are allocated for this trigonometry question?

• Three marks

• Two marks

• Four marks

• One mark