"Can you solve from the tangent line?"
The Tangent Fire shoots out a teal projectile that will periodically fire additional white pellets as it remains mid-flight. The pellets are not affected by gravity.
The tangent fire may take some mastering before being used successfully. Every once in a while, the main projectile will spit out a pellet that will travel straight until hitting an obstacle. The most common use is to fire it as if it were an ordinary-type weapon, as you are guaranteed to hit the main shot and may even take up additional pellets to add in the damage efficiency.
You may also try out different trickshots in order to maximize the amount of pellets fired by the Tangent Fire and consequently, the damage output.
Fires pellets more often and deals increased damage.