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A window washer is working in a hotel building. An observer at a distance of 20m from the building finds the angle of elevation of the worker to be of 30°. The worker climbs up 12 m and the observer moves 4m farther away from the building. Find the new angle of elevation of the worker?

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Anne Franks Diary The Gra

Rs: 1310

The Da Vinci Code Novel B

Rs: 330

Will Grayson Will Grayson

Rs: 330

Hopeless By Colleen Hoove

Rs: 330

Loosing Hope By Colleen H

Rs: 330

It Ends With Us By Collee

Rs: 330

Everything Everything By

Rs: 330

A Brief History Of Time B

Rs: 330

The Cipher By Kathe Koja

Rs: 300

The Time Travellers Wife

Rs: 300

Who Killed Daniel Pearl B

Rs: 300

As The Crow Flies By Jeff

Rs: 300

Tender Triumph By Judith

Rs: 300

The One Minute Manager By

Rs: 300

Blood Men By Paul Cleave

Rs: 300

75 People Who Changed The

Rs: 300

A Tale Of Two Cities Nove

Rs: 300

Tower Book By Alessandro

Rs: 300

A Personal History Book B

Rs: 440

Capitalisms Achilles Heel

Rs: 300