3 years ago

Find all possible values for θ if 0° < θ < 360° and tanθ = -1.

1 answer:

7 0

When tan theta = 1 theta = 45 degrees in the first quadrant.

When its = -1 one value of theta is -45 degrees.

Also as the tangent is negative in the second quadrant theta can also be 135 degrees or - 225 degrees.
in fourth quadrant we have 315 degrees.
Its not 225 degrees because the tangent is positive in 3rd quadrant.

Correct answer is a, b, c and e.

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