The calculator returns an error as the answer for the inverse sine of 1.055 because the acceptable range for sine is only from 0 to 1.00 in which 1.055 is clearly greater than. This is also the same as for the cosine values.
The answer is 7i because if you add 4+3i together as an absolute value, it equals to 7 plus the i is 7i
3^5
3 x 3 x 3
3:5 <- I think
Formula: A = pi(r)^2
1/4(2)^2pi
1/4 * 4 pi = just pi
The area would be 3.14