keirnanbrown3016 keirnanbrown3016

05-05-2021
Mathematics

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If you know that cosine of the obtuse supplementary angle -0.3456 what can you determine about the acute angle

Respuesta :

oladayoademosu oladayoademosu

06-05-2021

Answer:

69.8°

Step-by-step explanation:

Since cosФ = -0.3456

Ф = cos⁻¹(-0.3456)

Ф = 110.2°

Since the angles are supplementary, let the acute angle be x

So, x + 110.2° = 180°

x = 180° - 110.2°

x = 69.8°

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