C-10-Q070mediumsingle_mcq

Angle of depression from a higher point and angle of elevation from a lower point form—

acorresponding angles
balternate angles between parallel lines
csupplementary angles
dvertically opposite angles

ব্যাখ্যা

Both reference lines are horizontal and hence parallel, with the line of sight acting as a transversal between them. The angle of depression and the angle of elevation are therefore equal alternate angles.

এই অধ্যায়ের আরও প্রশ্ন

C-10-Q071Building height , , with . Then equals—
C-10-Q072From the equation , we get
C-10-Q073Moving back m to point gives elevation , so equals—
C-10-Q074Therefore also equals—
C-10-Q075Combining gives
C-10-Q076Hence approximately equals—
C-10-Q077Rationalizing, is equivalent to—
C-10-Q078As the observer moves backwards on level ground, the angle of elevation of a fixed building top—
C-10-Q079The pole stands , breaks without separation, and the broken piece slopes down to at distance m, with . From ,
C-10-Q080Solving for the standing piece, equals—

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