Jee MainTrigonometric Functions And EquationsJEE Main 2021 (Online) 22th July Evening ShiftMCQ+4 / -12021ENHIThe number of solutions of sin7x + cos7x = 1, x\(\in\) [0, 4\(\pi\)] is equal to A11B7C5D9Check AnswerClear SelectionReveal AnswerShow Explanation