MEDIUM
Diploma
IMPORTANT
Earn 100

The pendulum on a large grandfather clock swings from one side to the other once every second. The length of the pendulum is 4 m and the angle through which it swings is π12. Find the total distance the tip of the pendulum travels in one minute.

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Important Questions on Periodic Relationships: Trigonometric Functions

MEDIUM
Diploma
IMPORTANT

A complete turn has 360 degrees, and each degree is divided into 60 parts called minutes.

When the central angle with its vertex at the centre of the earth has a measure of 1 minute, the arc on the surface of the earth that is formed by this angle (known as the great-circle distance) has a measure of 1 nautical mile.

The radius of the earth is approximately 6371 km. Find how many km there are in 1 nautical mile.

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EASY
Diploma
IMPORTANT

Find an obtuse angle that has the same sine as:

36°       [Enter the value excluding degree symbol]

EASY
Diploma
IMPORTANT

Find an obtuse angle that has the same sine as:

50°       [Enter the value excluding degree symbol]

EASY
Diploma
IMPORTANT

Find an obtuse angle that has the same sine as:

85°       [Enter the value excluding degree symbol]

EASY
Diploma
IMPORTANT

Find an obtuse angle that has the same sine as:

460°       [Enter the value excluding degree symbol]