the angle of elevation of the top of a mountain is 30 degrees from a point on the ground on moving towards the mountain a distance of1000m the angle of elevation becomes 45 degree . find the height of mountain .
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calculate the elevation of a mountain, scientists would measure the distance between two points on the ground and then measure the angles between the top of the mountain and each point. "If you have two angles, you know the third, because the sum of the angles is 180 [degrees]," Molnar told Live Science.May 1, 2015
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