Question

write a prototype of a function poschar that accepts one integer and two character values and returns a string value​

Answer 1

Answer:

Find the value of x^3+y^3+3xy(x+y) if:

x=cos^2 5°+ cos^2 10°+ cos^2 15°&y= sin^2 5°+sin^2 10°+ sin^2 15°