Trigonometry

Solve for sides or angles

Angles of elevation and depression I

Solve problems involving two right-angled triangles

Trigonometric ratios review

Trigonometry in 3D

Solve contextual problems in right triangles

Applications of the sine law

Applications of the cosine law

Solve problems involving either sine or cosine law

EXT: Further trigonometric problems in 3D

Grade 11

Solve for sides or angles

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

Outcomes

11C.C.2.4

Solve problems that arise from real-world applications involving metric and imperial measurements and that require the use of the sine law or the cosine law in acute triangles

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