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

compare the pokhara university

The first law of motion describes the principle of __________

The majority of immigrants to Virginia were what

Functions, f and g are given by f(x)= 3+ cos x and g(x) = 2x, x is a real number. Determine the value of c for which f(g(x))= g(f(x)) where 0[tex]\leq[/tex] x&l

Help me please…………………

Use the word Liable in a setence

Find the length of the third side of the right triangle. Give an exact answer and an approximation to three decimal places if needed.

I really need an answer as soon as possible. 10 pts worth it

The Declaration of the Rights of Man and Citizen was rejected by philosophes. was issued by Louis XVI to end the rebellion. owed much to the American Decl

What is one way private citizens can help conserve natural resources?