kevinmwc1 kevinmwc1

15-04-2020
Mathematics

contestada

In triangle ABC, a = 3, b = 5, and c = 7. Find the approximate value of angle A.

Respuesta :

amna04352 amna04352

05-05-2020

Answer:

21.8° (22° to the nearest degree)

Step-by-step explanation:

Using cosine law:

a² = b² + c² - 2bc(cosA)

3² = 5² + 7² - 2(5)(7)cosA

cosA = 13/14

A = 21.7867893

Approximately angle: 22°

Answer Link

Otras preguntas

What is the result of multiplying 4/3 and its reciprocal? A) -1 B) 6/8 C) 1 D) 8/6

Estaba muy triste que tú te de esa manera al saber la verdad. (sentir) sentirse O sintieras sentir sienta

Tim has read 40% of a book. He has 36 more pages to finish. How many pages are there in the book?

There is a population of 1,000 bacteria in a colony. If the number of bacteria doubles every 4 minutes, what will the population be 8 minutes from now? Please h

What is god trying to tell you in John 5

It is not a man’s duty, as a matter of course, to devote himself to the eradication of any, even the most enormous, wrong; he may still properly have other conc

What does each section of the triangle represent?

Computer equipment was acquired at the beginning of the year at a cost of $57,000 that has an estimated residual value of $9,000 and an estimated useful life of

PLEASE HELP ASAP! Will give BRAINLIEST! Please answer correctly! No guessing!

What the the Quotient 7/12 divided by 2/5