Question
An elevator descends into a mine shaft at the rate of 6 m/ min. If the descends starts from 10 m above the ground level,how long wiil it take to reach - 350 m.
Sir i got the answer before the question complete sir please tell me what's my mistake.
Maths
Sept. 29, 2020, 5:47 p.m.
Answer
From a point on the ground, the angles of elevation of the bottom and the top of a transmission power fixed at the top of a 20m height building are 45 degree and 60 degree respectively. Find the height of the tower.
Sir here is one mistake in 7th Ter exceeds the 5th term by 12
Also,
an=a (n-1)d
a7=a (7-1)d
a7=a 6d
Here written wrong sir
Also,
an=a (n-1)d
a7=a (7-1)d
a7=a 6d
Here written wrong sir
5min 
