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The answer to your question is Ф = 210°; sin 120 = -1/2

Step-by-step explanation:

Data

Ф = 7π/6

∠ = ?

sin Ф = ?

Process

1.- Convert radians to degrees using proportions and cross multiplication

                     π rad     180°

                   7π/6 rad     x

                     x = (7π/6 x 180) / π rad

                     x = (7 x 180) / 6

                     x = 1260/6

                     x = 210°

2.- Find the sin of 210°

sin 210 = -1/2

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step-by-step explanation:

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-7

step-by-step explanation:

x^2 + 18x + 74 = (x + 9)^2 - 81 + 74

= (x + 9)^2 - 7.

so q = -7.