Solve tan(x-pie)-cos(x-3pie/2)=0,x €[0,2pie)

Do you have options or no?

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.

The right answer should be 6 but your not very specific