jee-main 2021 Q63

jee-main · India · session3_22jul_shift1 Standard trigonometric equations Solve trigonometric equation for solutions in an interval

The number of solutions of $\sin ^ { 7 } x + \cos ^ { 7 } x = 1 , x \in [ 0,4 \pi ]$ is equal to
(1) 11
(2) 7
(3) 5
(4) 9

The number of solutions of $\sin ^ { 7 } x + \cos ^ { 7 } x = 1 , x \in [ 0,4 \pi ]$ is equal to\\
(1) 11\\
(2) 7\\
(3) 5\\
(4) 9