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Subjects>Math>Algebra

What is the reference angle for -490 degrees?

Updated: 4/28/2022

Wiki User

∙ 12y ago

Best Answer

When using autocad, 0 degrees was at 3 o' clock, then go anticlockwise for positive, clockwise for negative

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∙ 12y ago

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Continue Learning about Algebra

What is the reference angle for an angle with a measure of 331 degrees?

It is a reflex angle

What is the reference angle for an angle with a measure of 331?

29 degrees.

What is the reference angle of 335 degrees?

25

What is the reference angle for 305 .?

It is 55 degrees.

What is the reference angle of -190 degrees?

It is a reflex angle because it's greater than 180 degrees

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What is the reference angle for an angle with the measure of 175 degrees?

The reference angle for an angle with the measure of 175 degrees is 5 degrees

What is the reference angle of 90 degrees?

Quadrantals are their own reference angle, so 90 degrees.

Find the reference angle for the angle 59 degrees?

90 degrees

What is the reference angle of 353 degrees?

353 degrees is a reflex angle

Why is 90 degrees taken as angle of reference in trigonometry?

It is not. The angle of reference is 2*pi radians or 360 degrees.

What is the reference angle sin 285?

Sin(285) is a number, not an angle. The reference angle for 285 degrees is 285-360 = -75 degrees.

What is the reference angle of 180 degrees?

complementary angle.

What is the angle reference for a right angle?

90 degrees

What is the reference angle of 320 degrees?

40 degrees

What is the reference angle for -145 degrees?

35 degrees

What is the Reference angle for 170 degrees?

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