3 years ago

If in triangle ABC, a=5, b=6 and c=8, then cos A is...

1 answer:

s2008m [1.1K]3 years ago

5 0

In a triangle, the nomenclature is that a variable side a is opposite of the angle A. we can use the cosine law to determine the value of cosine A.
a2 = b2 + c2 -2bc cos a25 = 36 + 64 - 2*6*8 * cos acos a = 25/32

You might be interested in

Select the correct answer.<br> What are the solutions to this quadratic equation?

ipn [44]

Answer:

B. 4 - 2√10

Step-by-step explanation:

This is the value of x when you plug it into the equation.
Hope this helped!

8 0

1 year ago

What is the equation of the line in standard form?

Paha777 [63]

I Would Say A Is The Correct One

8 0

3 years ago

Read 2 more answers

The energy usage of a light bulb is a function. The input for the function is _____ measured in hours.

Elena L [17]

Answer:

Time

Step-by-step explanation:

8 0

2 years ago

mark and Julie each on a sandwich shop in Missouri. last month Julie shop sold 12 more meatball sub sandwiches then Mark shop. i

Bogdan [553]

Mark: 52 meatball sandwiches
Julie: 64 meatball sandwiches

3 0

3 years ago

Pls somebody help me, only right answers :(

klemol [59]

Answer: (2*5.4*7)+(2*5*8)+(7*8)

Step-by-step explanation:

7 0

2 years ago