C-10-Q104mediumsingle_mcq

With the same $20$ m base distance, if the elevation were $30^\circ$ , the height would be—

a $20\sqrt{3}$ m
b $\dfrac{20}{\sqrt{3}}$ m
c $10$ m
d $40$ m

ব্যাখ্যা

At $30^\circ$ , $h = 20\tan 30^\circ = 20 \times \frac{1}{\sqrt{3}} = \frac{20}{\sqrt{3}}$ m. The smaller angle produces a smaller height than at $60^\circ$ .

এই অধ্যায়ের আরও প্রশ্ন

C-10-Q105With ladder m and ground angle , the height of the wall equals—
C-10-Q106in simplest surd form equals—
C-10-Q107The approximate wall height is—
C-10-Q108From the top of a house, the angle of depression to a point on the ground m from the foot is . The angle of el
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

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

With the same $20$ m base distance, if the elevation were $30^\circ$ , the height would be—

20\sqrt{3}

\dfrac{20}{\sqrt{3}}

10

40

ব্যাখ্যা

At $30^\circ$ , $h = 20\tan 30^\circ = 20 \times \frac{1}{\sqrt{3}} = \frac{20}{\sqrt{3}}$ m. The smaller angle produces a smaller height than at $60^\circ$ .

With the same 202020 m base distance, if the elevation were 30∘30^\circ30∘, the height would be—

ব্যাখ্যা

এই অধ্যায়ের আরও প্রশ্ন

With the same 202020 m base distance, if the elevation were 30∘30^\circ30∘, the height would be—

ব্যাখ্যা

এই অধ্যায়ের আরও প্রশ্ন

With the same $20$ m base distance, if the elevation were $30^\circ$ , the height would be—

With the same $20$ m base distance, if the elevation were $30^\circ$ , the height would be—