Calculate 6539

Calculate the magnitude of the angle formed by the lines p and q, which connect 1, 6 (line p), and 5, 8 (line q) on the clock face.

Correct answer:

A =  90 °

Step-by-step explanation:

d=360/12=30  n1=1 d+(61) d/2=1 30+(61) 30/2=105  n2=5 d+(85) d/2=5 30+(85) 30/2=195   A=n2n1=195105=90

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