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1.2 metre girls got a balloon moving with the wind of horizontal line at a height of 88.2 m from the ground the angle of elevation of the balloon from the girls is at the instant is 60 degree at after sometime the angle of the elevation reduces 30 find the distance and travel by the balloon during the interval |
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Answer»
nAE/CE=tan60° AF-EF/CE=tan60° 88.2-1.2/CE= root 3 87/CE=ROOT 3 CE= 87/ROOT 3 =29 ROOT 3 IN TRIANGLE BCG, BG/CG=tan30° 88.2-1.2/CG=1/ROOT3 87 ROOT3m-CG distance travelled by balloon=EG=CG-CE (87 ROOT3-29 ROOT3)m 58 Root3...
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