Question

Find 0. Round to the nearest degree A. 26 B. 66 C. 64 D. 24

Answer 1

Answer:  Choice C) 64 degrees

Work Shown:

$\cos(\theta) = \frac{\text{adjacent}}{\text{hypotenuse}}\\\\\cos(\theta) = \frac{7}{16}\\\\\cos(\theta) = 0.4375\\\\\theta = \cos^{-1}(0.4375)\\\\\theta \approx 64.0555^{\circ} \\\\\theta \approx 64^{\circ}$

Note: some calculators will use the notation arccos in place of the $\cos^{-1}$

Answer 2

Answer:

C. 64°

Step-by-step explanation:

${ \tt{ \cos( \theta) = \frac{adjacent}{hypotenuse} }} \\ \\ { \tt{ \cos( \theta) = \frac{7}{16} }} \\ \\ { \tt{ \theta = { \cos }^{ - 1} ( \frac{7}{16} )}} \\ \\ { \tt{ \theta = 64 \degree}}$