from the top of a building an observer look at a car on the road and find the angle of depression 30 degree.if the height of the building is 45 metre, find how far is the car from building
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Step-by-step explanation:
- Angle of depression = 30°
- Height of the building = 45 m
- The distance of car from the building
↠ From the given figure in the attatchment, AB= height of the building = 45 m, Angle C = 30°
↠ We need to find BC which is the distance from car to the building.
↠ tan C = opposite/ adjacent
tan C = AB/ BC
tan C = 45/BC
tan 30° = 45/BC
BC = 45√3 m
↬ Sin A = opposite/hypotenuse
↬ Cos A = adjacent/hypotenuse
↬ Tan A = opposite/ adjacent
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