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Spaced repetition: each system comes back just before you would forget it. Fast, correct answers stretch the interval; a miss brings it back the same day.

Free practice: Natural angle: the 30° and 90° rulesScore 0/0
12
On the table, the ringed ball is your ball (1). 2 = the ball your cue ball hits first, 3 = the last ball to hit for the point.
Natural angle: the 30° and 90° rules
Sliding ball: Deflection = 90° − cut angle · Rolling ball: tan(Deflection) = sin θ · cos θ ÷ (sin² θ + 0.4)
Your ball:White(cue ball · 1)
Ball 2Red
Expected shot:Natural angle: the 30° and 90° rulesBall first

The cue ball hits ball 2 first, then travels the cushions in order to ball 3.

Given:
Ball fraction1/2Cue ball at contactNatural roll (30° rule)
In this position, what is Deflection angle (°)?

Task: put the given values into the system's formula and calculate Deflection angle (°). Enter the answer in degrees, as a number only.