Answer:
Step-by-step explanation:
it can be simplified to
. if you multiply each side by the denominator, it becomes
since
and cotan is the reciprocal of that. Because
so multiplying each side gives
, and
is equal to 1.
Answer:
5/2 Hope this helped
Step-by-step explanation:
Answer:
0
Step-by-step explanation:
So we have the expression:

And we want to evaluate it for x=-4 and y=8.
So, substitute:

Multiply:

Add:

Evaluate:

So, our answer is 0.
And we're done!
The area is 50.24 cm.
The formula is π·r^2.
The radius is 4 cm, and you square it. 16 cm.
Then you multiply 16 by 3.14 (π). And you get 50.24 cm as the area.
Answer:
83100
Step-by-step explanation:
46,170 + .8(46170)
46170 + 36936
83100