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Get Started Now- Lesson: 11:51
- Lesson: 21:12

Basic concepts: Use sine ratio to calculate angles and side (Sin = $\frac{o}{h}$ ), Use cosine ratio to calculate angles and side (Cos = $\frac{a}{h}$ ), Use tangent ratio to calculate angles and side (Tan = $\frac{o}{a}$ ), Combination of SohCahToa questions,

Related concepts: Ferris wheel trig problems, Tides and water depth trig problems, Spring (simple harmonic motion) trig problems,

- 1.Determine the length of the longest guy wire if the tower in the middle of the bridge is 45 yards high and the angle of elevation from where the guy wire is anchored to the top of the tower is $40^\circ.$
- 2.If the length of the guy wire is 40 metres and the angle of elevation from where the guy wire is anchored is $35^\circ$, how far from the base of the pole is the guy wired anchored?

30.

Trigonometry

30.1

Using sine ratio to calculate angles and side (Sin = $\frac{o}{h})$

30.2

Using cosine ratio to calculate angles and side (Cos = $\frac{a}{h}$)

30.3

Using tangent ratio to calculate angles and side (Tan = $\frac{o}{a} )$

30.4

Combination of SohCahToa questions

30.5

Word problems relating ladder in trigonometry

30.6

Word problems relating guy wire in trigonometry

30.7

Other word problems relating angles in trigonometry

We have over 1180 practice questions in Algebra 1 for you to master.

Get Started Now30.1

Using sine ratio to calculate angles and side (Sin = $\frac{o}{h})$

30.2

Using cosine ratio to calculate angles and side (Cos = $\frac{a}{h}$)

30.3

Using tangent ratio to calculate angles and side (Tan = $\frac{o}{a} )$

30.4

Combination of SohCahToa questions

30.5

Word problems relating ladder in trigonometry

30.6

Word problems relating guy wire in trigonometry

30.7

Other word problems relating angles in trigonometry