What is the measure of angle a?

enter your answer as a decimal in the box. round only your final answer to the nearest hundredth.

°
triangle a b c with right angle a. a b equals 18. b c equals 80. a c equals 82.

Step-by-step explanation:

You're answer to this question is 77.32, because I just took this quiz five seconds ago and this answer was shown

angle A is 77.32°

Step-by-step explanation:

AB = c = 18

BC = a =82

AC = b = 80

To find angle A, we are going to use cosine formula;

a² = b² + c² - 2bc COS A

80² = 82² +  18² - 2(82)(18) COS A

6400 = 6724 + 324 - 2952 COSA

6400 = 7048 - 2952 COSA

Add 29852 COSA to both-side of the equation in other to take '29852 COSA' to the left-hand-side of the equation

6400 +  29852 COSA  = 7048- 29852 COSA+29852 COSA

6400 + 29852 COSA  =  7048

Subtract 6400 from both-side of the equation

6400 - 6400 + 29852 COSA = 7048 - 6400

29852 COSA =  648

Divide both-side of the equation by 29852

29852 COSA  /    29852   =   648/29852

(On the left-hand side of the equation 29852 at the numerator  will cancel-out 29852 at the denominator leaving us with just COSA while on the right-hand side of the equation 648 will be divided by 29852 )

COSA = 648 / 29852

COSA = 0.219512

But what we were ask to find is just angle A, to find angle A, take the of both-side of the equation

COSA  = (0.219512)

A = 77.31963

A = 77.32°  to the nearest hundredth

Therefore angle A is  77.32° to the nearest hundredth

black/brown

step-by-step explanation:

well, you see here, jamal was born to 2 parents, his mother who he lives with and his father who left at a young age and who happens to be younger than him. he stole cookies because he has to steal food due to the fact that he spends his government poverty checks on pot and women.