Trigonometric ratios in a right-angled triangle

Subject: Mathematics

Grade: Lower Secondary

Publisher: YDP

Resource types: Class activity

Resource ID: e649
Description:

At the end of this activity, students should be able to:
use the sine, cosine and tangent ratios to find angles
- find the sine, given the cosine (and vice versa)
- solve triangles
- use exact values for selected angles
- use a calculator to find trigonometric ratios
- use a calculator to find angles, given trigonometric ratios.

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Trigonometric ratio... Whiteboard presentation

Consists of...
A right-angled tria... Student activity A staircase Student activity Other trigonometric... Student activity How do you find the... Student activity A closer look at th... Student activity Finding sides Student activity How do you find an ... Student activity Exact values of tri... Student activity Finding the exact v... Student activity Solving triangles Student activity

Relevant to...

Secondary School

Lower Secondary (Grades 7-9)

Mathematics

Trigonometry (1)

70. Trigonometric ratios in a right-angled triangle

YDP SA

Keywords

ratio, angle, right, triangle, right-angled, tangent, ratios, trigonometric, sine, cosine, Trigonometric ratios in a right-angled triangle

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