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Tom [10]
2 years ago
12

Help pleaseeeeeeeeeeee

Mathematics
1 answer:
rusak2 [61]2 years ago
6 0
I think it would be $2.90x+4.75x=39.55 and then you just solve that. I’m not 100% sure that’s how it is written out but I hope I helped
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For which value of theta is sine theta = negative 1?
Ivan

Answer:

1) 270 degrees

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Step-by-step explanation:

1.) For which value of theta is sine theta = negative 1?

Given

sintheta = -1

theta = arcsin(-1)

theta = -90degrees

Since sin is negative in the third and 4th quadrant

In the third quadrant, theta = 180 + 90 = 270degrees

In the fourth quadrant, theta = 360 - 90 = 270 degrees

Hence the required value of theta is 270degrees

2) Given the radius of the circle to be 1, the y axis value will also be 1 units

Opposite = 1

adjacent = 1

hyp = √1²+1²

hyp = √2

sin theta = opp/hyp

sin theta = 1/√2

theta = arccsin(1/√2)

theta = 45 degrees

Express in radians

45 degrees = pi/4 radians

Hence the required angle in the first quadrant is pi/4 rad

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Answer:

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