You have to find the cos of angle A, so use the Pythagorean equation and trig laws to find the other side of the triangle created by angle A. 3^2 + x^2 = 5^2. x=4. This means cos(A) = 4/5). Make both cos (A) and cos (B) have equal denominators, and add. 148/185 + 60/185 = 208/185. This answer is correct, though it doesn’t appear to be any of the answers you wrote, so either those answers are wrong or you wrote something incorrectly in the problem.
10=2×5 and 14=2×7 so least common denominator will be 2×5×7=70
9/10=63/70
3/14=15/70
So 63/70-15/70=48/70=24/35
Answer:
18
Step-by-step explanation:
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Just todo the test so its tje ansiedad
Answer:
Do you have answers to the question? if so can you post them so i can see?
Step-by-step explanation:
The distance between two points is the number of units between them.
The distance between Q and R is 3.61 units
<em>It is impossible to determine your friend's error, because the steps are not given in the question. So, I will calculate the distance between Q and R, instead.</em>
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The distance (d) between two points is:

So, the distance QR is:


Evaluate exponents


Take square root of 13

Hence, the distance between Q and R is 3.61 units
Read more about distance at:
brainly.com/question/16310813