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2 years ago

I WILL GIVE BRAINLIEST!!!! Calculate cos M if a= 4, b= 12.5, c= 13.1244 **Round your answer up to four decimal places.

Mathematics

1 answer:

kompoz [17]2 years ago

7 0

Answer:

cosM ≈ 0.3048

Step-by-step explanation:

remember SOH CAH TOA = sine: opposite/hypotenuse; cosine: adjacent/hypotenuse; tangent: opposite/adjacent

cos = CAH

cosM= a / c

cosM = 4.0 / 13.1244

cosM = 0.30477

cosM ≈ 0.3048

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lapo4ka [179]

Answer:

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Step-by-step explanation:

For any angle $\theta$ , we have that:

$(\sin{\theta})^{2} + (\cos{\theta})^{2} = 1$

Quadrant:

$0 \leq \theta \leq \frac{\pi}{2}$ means that $\theta$ is in the first quadrant. This means that both the sine and the cosine have positive values.

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$(\sin{\theta})^{2} + (\cos{\theta})^{2} = 1$

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$(\cos{\theta})^{2} = 1 - \frac{1}{16}$

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$\cos{\theta} = \pm \sqrt{\frac{15}{16}}$

Since the angle is in the first quadrant, the cosine is positive.

$\cos{\theta} = \frac{\sqrt{15}}{4}$

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2 years ago

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Answer:

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Step-by-step explanation:

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1 year ago

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sertanlavr [38]

Answer:

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Step-by-step explanation:

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