Ok so BFD is a 90 degree angle. So you know you have 43 in one of the spaces so that means all you have to do is take 90 and minus 43 which is 47.
<h3>SOLUTION : </h3>
The radius of the circle is 4 inch and has an arc length of 5.8 inches . We know that if the central angle is 360° then the arc length is
. Similarly when angle is theta ,
Now substitute respective values , from the given data ,

This is our required answer!
Answer: (3√5-4√2)(√125) = 75 - 20√10
I
because 89 is an odd number
and since i is root of -1
if the exponent is odd,
the result will always be i, the base.
On the other hand, if it is even,
the result will always be -1.