Point A(-3,y)is on the x-y plane and the line OA from the origin to A makes an angle of 120° with the x- axis .find the value of Y
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the angle of elevation of the top C of a vertical tower CD of height h from a point A in the horizontal tower is 45° and from a point B at a distance a from A on the line making an angle of 30° with AD,it is 60°.if angle cba=50k .then value of k is
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