Two chords

From the point on the circle with a diameter of 8 cm, two identical chords are led, which form an angle of 60°. Calculate the length of these chords.

Correct answer:

t =  6.9282 cm

Step-by-step explanation:

D=8 cm A=60 ° B=A/2=60/2=30 ° r=D/2=8/2=4 cm  r2=r2+t22 r t cosB t2=2 r t cosB t=2 r cosB°=2 r cos30° =2 4 cos30° =2 4 0.866025=6.928=6.9282 cm



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