One question. One clean method.

A real HSC-style Measurement question — have a crack on paper, or just reveal the method below. Nothing's marked, and you don't need an account.

A sail on a yacht is a triangle. In triangle ABC, side AB = 7 m, side BC = 18 m, and the angle ABC = 50°.

Find the area of the triangle, correct to one decimal place (in square metres).

Show me the full solution

Worked solution — answer: 48.3

A = ½ab sin C

= ½ × 7 × 18 × sin 50°

= 48.3 m²

That's the idea — a clear worked method for every question type.

RedTexta finds exactly where your marks are leaking and builds a plan around just that — with a worked example whenever you get stuck.

A quick, adaptive check — about 5 minutes, and you can stop anytime.