Question

PLEASE HELPPPPP WILL GIVE
BRAINLIEST!!!!!!!

Answer 1

Answer:

0.90

Step-by-step explanation:

Same thing use cosine

cos77 = a/4

4(cos77) = a

a = 0.8998 which is just 0.90

Answer 2

Answer: 0.9

Step-by-step explanation:

Let’s using a cosine. What is a cosine? The cosine of an adjacent is the length of the adjacent side divided by the length of the hypotenuse.

cos(77 degrees)=a/4.

Cos(77 degrees)x4=0.899 rounded to decimal place it will gives 0.9

The result is 0.9