Question

The angle subtendedby a chord at a centre of the circle 15cm is 42 find the lenght of the chord. Leave your answer in one decimal place

Answer 1

Answer: If an angle of 42 degrees subtends a chord of a circle with radius 15 cm, we can use the following formula to find the length of the chord:

length of chord = 2 × radius × sin(angle/2)

Plugging in the values we know, we get:

length of chord = 2 × 15 cm × sin(42/2)

length of chord = 2 × 15 cm × sin(21)

length of chord ≈ 13.1 cm

Therefore, the length of the chord is approximately 13.1 cm, rounded to one decimal place.

Explanation: