EASY
9th Manipur Board
IMPORTANT
Earn 100

Find the angle between the hour hand and minute hands of a clock when it is 15 minutes past 3 a.m. Express it in all three systems of measurement.

Important Questions on Trigonometry

EASY
9th Manipur Board
IMPORTANT
Mathematics for Class 9>Chapter 13 - Trigonometry>EXERCISE 13.1>Q 5
When the angles of a triangle are measured in the sexagesimal system their magnitudes are in the ratio 2:3:4. Find the angle sin the radians.
EASY
9th Manipur Board
IMPORTANT
Mathematics for Class 9>Chapter 13 - Trigonometry>EXERCISE 13.1>Q 6
Find the magnitude of internal angle of regular polygon of 20 sides. Express it in degrees and radians.
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.