When cosx = 0 , sin(cos(x)) will = 0
And cosx = 0 at pi/2 and 3pi/2 (restricting ourselves to [0,2pi])
Here's a graph of the function......https://www.desmos.com/calculator/qafzzoaiad
Find the invSin of both sides:
invSin( sin ( cos (x) ) ) = invSin( 0 )
cos(x) = 0
Find the invCos of both sides:
invCos( cos(x) ) = invCos( 0 )
x = 90° or 270° (and suitable multiples)
When cosx = 0 , sin(cos(x)) will = 0
And cosx = 0 at pi/2 and 3pi/2 (restricting ourselves to [0,2pi])
Here's a graph of the function......https://www.desmos.com/calculator/qafzzoaiad