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CanadaON
Grade 11

Sine law

Interactive practice questions

Consider a triangle where all three sides are known, but no angles are known. Is there enough information to find all the angles in the triangle using only the sine rule?

A triangle with sides labeled as a, b, and c.

No

A

Yes

B
Easy
< 1min

Find the side length $a$a using the sine rule.

Round your answer to two decimal places.

Easy
2min

Find the length of side $a$a using the Sine Rule.

Write your answer correct to two decimal places.

Easy
2min

Find the value of the acute angle $x$x using the sine rule.

Round your answer to one decimal place.

Easy
3min
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Outcomes

11U.D.1.6

Pose problems involving right triangles and oblique triangles in two dimensional settings, and solve these and other such problems using the primary trigonometric ratios, the cosine law, and the sine law (including the ambiguous case)

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