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Trigonometry
PYTHAG - The Right-Angled Triangle
PYTHAG - Pythagorean Triads
PYTHAG - Calculating Side Lengths Using Pythagoras
Sides of a Right-Angled Triangle
Ratio of Sides in Right-Angled Triangles
Trigonometric Ratios I
Trigonometric Ratios II
Calculating Trigonometric Expressions
Finding Unknown Side Lengths Using Trig Ratios
Finding Unknown Angles
Triangle Problems
Applications to Geometry
Angles of Elevation and Depression
Problems with Two Right-Angled Triangles
Lesson
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Applications to Real Life I
Applications to Real Life II
Trigonometry in 3D
Applications Including Bearings
Exact trigonometric values in first quadrant
Solve trigonometric equations with exact values
Complementary results
PYTHAG - Applications using Pythagoras
PYTHAG - Review (calculations and applications)
Pythagoras in 3D
Trigonometric Ratios with Exact Values
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Hong Kong
Stage 1 - Stage 3

Problems with Two Right-Angled Triangles

Lesson
Practice

Interactive practice questions

Consider the following diagram.

a

First, find the length of $CD$CD correct to two decimal places.

b

Then, find the length of $AC$AC correct to two decimal places.

c

Hence, find the length of $AD$AD correct to two decimal places.

Easy
Approx 4 minutes

Consider the following diagram.

Consider the following diagram.

Consider the following diagram:

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