Trigonometry

Pythagoras in 3D

The Trigonometric Ratios

Triangle Problems

Trigonometry in 3D

Applications to Real Life

Sine Rule (Ambiguous Case)

Applications of the Sine Rule

Applications of the Cosine Rule

Sine and Cosine Rule

Area of Non-Right Angled Triangles

Stage 4 - Stage 5

Triangle Problems

Interactive practice questions

Find the value of $f$f, correct to two decimal places.

A right-angled triangle with a $27$ -degree angle at its base is shown. The side opposite the $27$ -degree angle is labeled as "$f$f m" indicating a length in meters that is not specified. The side adjacent to the $27$ -degree angle is labeled " $8$ m," indicating a length of $8$ meters. The hypotenuse, connecting the vertex of the $27$ -degree angle to the right angle, is not labeled. The right angle is indicated by a small square at the triangle's base

Easy

2min

Find the value of $f$f, correct to two decimal places.

Easy

1min

Find the length $g$g, correct to two decimal places.

Easy

2min

Find the value of $x$x to the nearest degree.

Easy

1min

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