Grade 12

Solve for sides or angles I

Lesson

Practice

Interactive practice questions

Write down the ratio represented by $\cos\theta$cosθ.

A right-angled triangle labeled with vertices A, B, and C is shown. The angle at vertex A is labeled $\alpha$`α`. The angle at vertex B is labeled $\theta$`θ`. The angle at vertex C is a right angle as indicated by a small square. Opposite vertex C is side AB, which is the hypotenuse. Side BC is adjacent to angle $\theta$`θ`. Side BC is opposite angle $\alpha$`α`. Side AC is adjacent to angle $\alpha$`α`. Side AC is opposite angle $\theta$`θ`.

Easy

< 1min

Write down the ratio represented by $\tan\theta$tanθ.

Easy

< 1min

Write down the ratio represented by $\sin\theta$sinθ.

Easy

< 1min

Consider the following figure.

Easy

3min

Outcomes

12CT.C.1.4

Solve multi-step problems in two and three dimensions, including those that arise from real-world applications (e.g., surveying, navigation), by determining the measures of the sides and angles of right triangles using the primary trigonometric ratios

Solve for sides or angles I

Interactive practice questions

Outcomes

12CT.C.1.4

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