Question

As the angle of elevation of the increase from 30 degree to 60 degree, the length of the shadow of the building get reduced by 10 m. find the height of the building​

Answer 1

the angle of building=30degree

increase=60+30=90

Shadow of building=90-10=80

perimeter if rectangle=2(l×b)

2(80×b)

160=10b

b=160÷10

=16answer