ANSWER


EXPLANATION
We want to solve

where

We reciprocate both sides of this trigonometric equation to obtain:

We take arctangent of both sides to get;


This is the principal solution.
The tangent ratio is also positive in the third quadrant.
The solution in the third quadrant is

Isosceles means the bottom right angle is also 65, so to add up to 180, the final angle (B) must be 50.
I think you meant to write 2* 69
X is confusing
But I think you meant multiplication problem so the answer is
2 times 69 = 138
Answer:
Step-by-step explanation:
The volume of a cube is given by the formula :
a³ (where a is the side length )
So now we have to cube these lengths :
Part A :
(3x²y)³ =
(3x²y)(3x²y)(3x²y) =
(9x^4y²)(3x²y) =
27x^6y³ (This is now fully simplified so our final answer for a)
Part B:
(5y²)³ =
(5y²)(5y²)(5y²) =
(25y^4)(5y²) =
125y^6 (This is now fully simplified so our final answer for b)
Hope this helped and have a good day