Answered

IDNLearn.com: Your reliable source for finding expert answers. Join our knowledgeable community to find the answers you need for any topic or issue.

Find A in degrees. Round to the nearest tenth.
a=7
b=4
c=8

A=[?]°​

Find A In Degrees Round To The Nearest Tentha7 B4 C8A class=

Sagot :

Answer:

61 degrees.

Step-by-step explanation:

Use the law of cosine.

In this case, the law of cosine is:

7^2=4^2+8^2-2(4)(8)cos a

Meaning:

7^2-4^2-8^2/-2(4)(8)=.434

Then do the inverse cosine of .434, and it will equal to 61.02

Round to the nearest tenth and you'll get A= 61 degrees.

Thank you for using this platform to share and learn. Don't hesitate to keep asking and answering. We value every contribution you make. IDNLearn.com has the answers you need. Thank you for visiting, and we look forward to helping you again soon.