Which of following isn't classification number given below?
1 answer:
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You're trying to find constants 
such that 
. Equivalently, you're looking for the least-square solution to the following matrix equation.
To solve
, multiply both sides by the transpose of 
, which introduces an invertible square matrix on the LHS.
Computing this, you'd find that
which means the first choice is correct.
To solve
Computing this, you'd find that
which means the first choice is correct.
We know the opposite side (10) and the adjacent side (7), so we can use tangent to find angle B. Since tan = opposite side/adjacent side, we can set up this equation: tan(B) = 10/7. We can get B on its own by making the equation this: 
Now, we plug this into our calculator to get:
B = 55°, so angle B is 55°.
Let me know if you need any more help!
Now, we plug this into our calculator to get:
B = 55°, so angle B is 55°.
Let me know if you need any more help!