C-10-Q140mediumsingle_mcq

The pair of angles between line of sight and horizontal at the two endpoints of the line of sight are—

aequal in magnitude
bsupplementary
ccomplementary
dunrelated

ব্যাখ্যা

Because the line of sight is a transversal cutting two parallel horizontal lines, the angle of depression at the top and the angle of elevation at the bottom are alternate angles and hence equal in magnitude.

এই অধ্যায়ের আরও প্রশ্ন

C-10-Q141A m ladder leans against a wall making with the ground. The height it reaches on the wall equals—
C-10-Q142equals—
C-10-Q143The wall is m tall, so the ladder top is below the wall top by—
C-10-Q144approximately equals—
C-10-Q145A tree breaks; the broken part forms with the ground touching at m from the base. The standing piece equals—
C-10-Q146From , the broken piece equals—
C-10-Q147The total height of the tree is approximately—
C-10-Q148The angle of elevation from a point on the ground to a point above the ground is the angle—
C-10-Q149If the height of a pole is times the length of its shadow, then equals—
C-10-Q150Therefore the angle of elevation of the sun is—

Chapter 10: Distance and Elevation — সব প্রশ্ন দেখুন (160টি) →