C-10-Q108mediumsingle_mcq

From the top of a house, the angle of depression to a point on the ground $20$ m from the foot is $30^\circ$ . The angle of elevation from that point to the top equals—

a $30^\circ$
b $60^\circ$
c $45^\circ$
d $90^\circ$

ব্যাখ্যা

The line of sight and the horizontal form alternate interior angles between the two parallel horizontal lines (top and ground). Hence the angle of elevation equals the angle of depression, $30^\circ$ .

এই অধ্যায়ের আরও প্রশ্ন

C-10-Q109The equation gives
C-10-Q110is approximately—
C-10-Q111After rationalization, becomes—
C-10-Q112Initial elevation of tower top is at with . Then equals—
C-10-Q113After moving m back to point where elevation is , equals—
C-10-Q114Combining the two equations gives
C-10-Q115Then equals—
C-10-Q116The approximate height of the tower is—
C-10-Q117From the initial point , elevation of the minar top is . The distance to the foot equals—
C-10-Q118After moving m towards the minar, the new distance to the foot equals—

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

From the top of a house, the angle of depression to a point on the ground $20$ m from the foot is $30^\circ$ . The angle of elevation from that point to the top equals—

30^\circ

60^\circ

45^\circ

90^\circ

From the top of a house, the angle of depression to a point on the ground 202020 m from the foot is 30∘30^\circ30∘. The angle of elevation from that point to the top equals—

ব্যাখ্যা

এই অধ্যায়ের আরও প্রশ্ন

From the top of a house, the angle of depression to a point on the ground 202020 m from the foot is 30∘30^\circ30∘. The angle of elevation from that point to the top equals—

ব্যাখ্যা

এই অধ্যায়ের আরও প্রশ্ন

From the top of a house, the angle of depression to a point on the ground $20$ m from the foot is $30^\circ$ . The angle of elevation from that point to the top equals—

From the top of a house, the angle of depression to a point on the ground $20$ m from the foot is $30^\circ$ . The angle of elevation from that point to the top equals—