Anonymous
Anonymous asked in Science & MathematicsMathematics · 6 months ago

If 0° ≤ A ≤ 360° find the possible measures for: a) cos A = - √3/2 and b) tan A = -1 ???

If 0° ≤ A ≤ 360° find the possible measures for:

a)cos A = - √3/2

b) tan A = -1

(Question A attached as a picture)

Attachment image

2 Answers

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  • 6 months ago
    Favorite Answer

    cos(pi/6) = sqrt(3)/2

    Since cos(pi - x) = -cos(x)

    it follows cos( pi - pi/6) = -sqrt(3)/2

    or A = 5pi/6

  • Anonymous
    6 months ago

    rhugurguhriguhrghughu

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