Answer:
13x^2 - xy
Step-by-step explanation:
4x^2-3xy+2xy+9x^2
=13x^2-xy
Answer:
(n×5)
Step-by-step explanation:
Divide the second term by the first to find the ratio.
Answer:
42° and 138°.
Step-by-step explanation:
Here we use the identity that
.
Now, to find , we make use of the inverse sine function:
Another solution to this is
Thus, the values of in the interval for which are 42° and 138°.