Last Updated
：2025/11/28
reference angle
Noun
Japanese Meaning
参照角：別の角と三角関数の値が符号を除いて同一となる鋭角。非鋭角を検討する際の便宜上の基準として用いられる角度。
（ plural ）
Quizzes for review
An acute angle with the same values of trigonometric functions, up to sign, as another angle: used for easy reference when examining the non-acute angle.
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reference angle
When calculating trigonometric values for a 210° angle, I first find the reference angle of 30° and then adjust the signs accordingly.
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When calculating trigonometric values for a 210° angle, I first find the reference angle of 30° and then adjust the signs accordingly.
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