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Other word problems relating angles in trigonometry
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- Lesson: 35:24
Other word problems relating angles in trigonometry
Basic Concepts: Use sine ratio to calculate angles and sides (Sin = ho ), Use cosine ratio to calculate angles and sides (Cos = ha ), Use tangent ratio to calculate angles and sides (Tan = ao ), Combination of SohCahToa questions
Related Concepts: Ferris wheel trig problems, Tides and water depth trig problems, Spring (simple harmonic motion) trig problems
Lessons
- 1.A bird is sitting in a 35 metre tall tree looking down at a worm on the ground. If the angle of depression from the bird to the ground is 55∘, how far is the bird from the worm?
- 2.Standing on the balcony of an building A, the angle of elevation to the top of the building B across the street is 47∘, and the angle of depression to the bottom of the building B is 58∘. If the buildings are 42 metres apart, find the height of the building B across the street.
- 3.If the volume of the cube below is 512 cm3, what is the length of AB?