y=1-sinx is your y=sinx graph flipped on its x-axis (referring to the negative in front of sinx) and shifted up by 1 unit (referring to the 1 in front of -sinx
Below is your y=sinx
graph{sinx [-10, 10, -5, 5]}
Below is your y=-sinx. Notice that it is flipped on its x-axis. Another way you can know that it has flipped on its x-axis is by subbing any value into y=sinx and y=-sinx and you will notice that the y-value is the same but the sign is different
graph{-sinx [-10, 10, -5, 5]}
Below is your y=1-sinx. Notice that it is your y=-sinx but shifted upwards by 1 unit
graph{1-sinx [-10, 10, -5, 5]}
