Word problems relating ladder in trigonometry

Lesson: 1
5:38
Lesson: 2
4:58

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Word problems relating ladder in trigonometry

Basic Concepts: Use sine ratio to calculate angles and sides (Sin =

\frac{o}{h}

), Use cosine ratio to calculate angles and sides (Cos =

\frac{a}{h}

), Use tangent ratio to calculate angles and sides (Tan =

\frac{o}{a}

), Combination of SohCahToa questions

Lessons

1.
A ladder is leaning against an outside wall of a building. If the angle of elevation at the base of the ladder to the wall is $65^\circ$ and the ladder is 14 feet long, how far up the wall does the ladder reach?

2.
A 23 foot long piece of wood is leaning against the wall of a house. If the angle of elevation at the base of the wood to the wall is $75^\circ$ , how far is the wood from the base of the wall?

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