EASY
9th Manipur Board
IMPORTANT
Earn 100

Find the magnitude of internal angle of regular polygon of 20 sides. Express it in degrees and radians.

Important Questions on Trigonometry

EASY
9th Manipur Board
IMPORTANT
Mathematics for Class 9>Chapter 13 - Trigonometry>EXERCISE 13.1>Q 7
A certain building subtends an angle 14' at a point on the ground 2700 m away from the building. Find approximately height of the building in m.
EASY
9th Manipur Board
IMPORTANT
Mathematics for Class 9>Chapter 13 - Trigonometry>EXERCISE 13.1>Q 8
Find the ratio of the radii of two circles at the centres of which two arcs of the same length subtend 24° and 15°.
MEDIUM
9th Manipur Board
IMPORTANT
Mathematics for Class 9>Chapter 13 - Trigonometry>EXERCISE 13.1>Q 9
The length of minute hand is 21 cm. Find the distance described by its tip in 20 minutes in cm.