What is the measure of the reference angle for a -289 angle A. 89 B. 71 C. 289 D. 19

Question

What is the measure of the reference angle for a -289 angle

A. 89

B. 71

C. 289

D. 19

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Nick 4 years 2021-08-22T17:39:40+00:00 1 Answers 21 views 0

Answers ( )

  1. Bo
    0
    2021-08-22T17:41:29+00:00
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    Answer:

    B

    Step-by-step explanation:

    The reference angle and the given angle are the same angle.

    Add 360° to the given angle , so

    reference angle = – 289° + 360° = 71° → B

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )