C-10-Q068mediumsingle_mcq

The length of the stick in Example 4 is—

The stick is the hypotenuse $BC=\dfrac{AB}{\sin 30^\circ}=\dfrac{7}{1/2}=14$ m. Its full length is therefore m.

68/160

এই অধ্যায়ের আরও প্রশ্ন

C-10-Q069The reasoning that the depression angle at equals at uses the fact that the two horizontal lines at and at are
C-10-Q070Angle of depression from a higher point and angle of elevation from a lower point form—
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—

1/27=

14