Students Michaelle, Maeve, Barbara and Antony, are asked to solve the equation 2sinx+cosx−1=0. Who solved it correctly?
- Michaelle found as the solution set
S={2kπ,arccos(−53)+2kπ}
- Maeve found S={2kπ,π−arcsin54+2kπ}
- Barbara found S={2kπ,2arctan2+2kπ}
- Antony found S={2kπ,π−2arcsin55+2kπ}