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.
Answer:
4x^{14}
Step-by-step explanation:
in that equation, when you multiply integers with exponents, the integers multiply but the exponents add.
2+3+9 = 14
which means that the awnser is 4x^{14}
Do you have a picture or sum?
Answer: 
Step-by-step explanation:
Since, by the SAS formula of finding the area of triangle,
The area of triangle, 
Where, 
and 
are adjacent sides and 
is the included angle of these sides
Here, 
And, 
Thus, the area of the triangle ABC,
Therefore, Third Option is correct.
