Question
Maths
Feb. 20, 2020, 11:04 a.m.
Answer
If t if the angle of elevation of a cloud from a point of h metre above a lake is alpha and the angle of depressionoffice reflection in the lake is beta prove that the height of the cloud is
h(tan beta tan alpha)/(tan beta- tan alpha)
h(tan beta tan alpha)/(tan beta- tan alpha)
If the circumference of a circular sheet is154m find its radius .Also find the area of the sheet (take22_7