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Morgarella [4.7K]

3 years ago

7

Find cos θ if csc θ = 2 and θ is in quadrant II.

1 answer:

natita [175]3 years ago

5 0

Cosecant is one of the six trigonometric identities which is equal to the reciprocal of sine function. In this case, theta is equal to sin -1 = 1/2 equal to 30 degrees. Since this is in quadrant II, the angle is 180 - 30 or 150 degrees. cos 150 is equal to -0.866 or -ssqrt 3 over 2.

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What equation is the inverse of y=7x^2-10?

tangare [24]

Answer:

Option 2: y = ±sqrt( $\frac{x+10}{7}$ )

Step-by-step explanation:

y = 7x^2 - 10

To find the inverse of a function, you must swap the y and x.

x = 7y^2 - 10

Now I will just simplify to have y by itself on the left hand side.

x + 10 = 7y^2

$\frac{x+10}{7}$ =y^2

sqrt( $\frac{x+10}{7}$ )=±y

y = ±sqrt( $\frac{x+10}{7}$ )

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Step-by-step explanation:

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............................

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