Mathematics
A vertical tower standing on a horizontal plane is surmounted by a vertical flagstaff. At a point 100 m away from the foot of the tower, the angle of elevation of the top and bottom of the flagstaff are 54° and 42° respectively. Find the height of the flagstaff. Give your answer correct to nearest metre.
Related Questions
In the given figure PT is a tangent to the circle. Chord BA produced meets the tangent PT at P. Given PT = 20 cm and PA = 16 cm.
(a) Prove △ PTB ~ △ PAT
(b) Find the length of AB.
The following bill shows the GST rate and the marked price of articles :
Rajdhani Departmental Store
S.No. Item Marked price Discount Rate of GST (a) Dry fruits (1 kg) ₹ 1200 ₹ 100 12% (b) Packed Wheat Flour (5 kg) ₹ 286 Nil 5% (c) Bakery Products ₹ 500 10% 12% Find the total amount to be paid (including GST) for the above bill.
The marks of 200 students in a test were recorded as follows :
Marks % No. of students 0-10 5 10-20 7 20-30 11 30-40 20 40-50 40 50-60 52 60-70 36 70-80 15 80-90 9 90-100 5 Using graph sheet draw ogive for the given data and use it to find the,
(a) median
(b) number of students who obtained more than 65% marks
(c) number of students who did not pass, if the pass percentage was 35.
In a T.V. show, a contestant opt for video call a friend life line to get an answer from three of his friends, named Amar, Akbar and Anthony. The question which he asks from one of his friends has four options. Find the probability that :
(a) Akbar is chosen for the call.
(b) Akbar couldn't give the correct answer.