Double Triangle
Double Triangle
DOUBLE TRIANGLE:
Let AB be a tower and B be its foot. On the horizontal line through B, take two points P and Q, Measure the length PQ.
Let PQ = a.
Let the angles of elevation of the top A of the tower as seen from P and Q be respectively and
, then
Let AB = x, BQ = y
From right angled
From right angled
...............(ii)
From equations (i) and (ii)
Also,
In the above case , P and Q are on the same side of the tower.
If the two points are on the opposit sides of the tower then from the adjoining figure, we get
and
A flagstaff of height h is mouted on the top of a building. From a point on the ground, the angles of elevation of the foot and top of the flagstaff are | |||
| Right Option : D | |||
| View Explanation |
Students / Parents Reviews [20]
Abhyas institute is one of the best coaching institute in the vicinity of Ambala Cantt area. The teachers of the institute are well experienced and very helpful in solving the problems of the students.The good thing of the institute is that it is providing extra classes for the students who are w...
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10thWhen I have not joined Abhyas Academy, my skills of solving maths problems were not clear. But, after joining it, my skills have been developed and my concepts of science and SST are very well. I also came to know about other subjects such as vedic maths and reasoning.
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Aman Kumar Shrivastava
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Eshan Arora
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Anika Saxena
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Om Umang
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7thIt was a good experience with Abhyas Academy. I even faced problems in starting but slowly and steadily overcomed. Especially reasoning classes helped me a lot.
