Apartment house, also called apartment block or block of flats. building containing more than one dwelling unit of which are designed for domestic use. but sometimes including Shops and other non residential features. An educated farmer went to city along with his family members went to see the tall apartmerit buildings. His daughter is watching one tall building. She was curious to find the height of the building. She asked her father to help her to find the height of the building Her father told to calculate the distance from the building. She is 40 m away from the tall building. Also, she observes the angle of elevation of the top of the apartment suildings from bereyesisasuch that cosec5a = sec (135degrees - 6a). What is the height of the aprartment buildings if the height of the girl is1m?
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Height of building = 40 m
Step-by-step explanation:
cosec5a = sec (135° - 6a)
as we know that
Cosec(β) = Sec(90° - β)
=> cosec5a = Sec(90° - 5a)
=> Sec(90° - 5a) = sec (135° - 6a)
=> 90° - 5a = 135° - 6a
=> a = 45°
Tan 45° = Height of building / Distance from building
=> 1 = Height of building/40
=> Height of building = 40 m
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