Question

Use a calculator to evaluate 8 · cos30° rounded to four decimal places.

6.9282
1.2340
-7.9043
-0.50

Answer 1

The answer is A. 6.9282

Answer 2

6.9282 is correct answer.

Explanation:

Given : 8 · cos30° .

To find : evaluate 8 · cos30° rounded to four decimal places.

Solution : We have given that 8 · cos30° .

By the trigonometric values

cos30° =
`(√(3) )/(2)`

Plug the value

8 ·
`(√(3) )/(2)`

8 · 0.8660

6.9282.

Therefore, 6.9282 is correct answer.