A 1.2m tall girl spots a balloon moving with wind in a horizontal line at a height of 88.2m from the ground. The angle of elevation of the balloon from
the eyes of the girl at any instant is
60°. After some time, the angle of
elevation reduces to 30° (see Fig. 9.13).
Find the distance travelled by the
balloon during the interval.

Step-by-step explanation:

आय डोन्ट नो आज ॲनिवरसरी बटाटा प्रयोग

Answercounterclockwise rotation about the origin by 180 degrees followed by reflection about the y-axisexplanationthe given figure has verticesrecall that for counterclockwise rotation about the origin, when we rotate figure pqrs counterclockwise through an angle of 180° about the origin, the coordinates will becomenext, we reflect in the y-axis by negating the x-coordinates of the resulting figure to obtain,therefore the correct answer is c