How many times in a 24 hour day do the minute and hour hand make a 90 degree angle?
35059
How many times are the hands of a clock at $90$ degrees.
36883
How many different ways of putting circles on $OX$.
54285
Is there a rotational equivalent to newtons laws?
56699
Can you bound the third moment from the second moment?
119817
How to get current moment in ISO 8601 format with date, hour, and minute?
98160
Mouse rotated 90 degrees
64367
Convert seconds into days, hours, minutes and seconds
99012
Finding an angle in a $80^\circ$-$80^\circ$-$20^\circ$ triangle (variant involving $70^\circ$ and $60^\circ$)
120196
An angle inside a regular pentagon
109163
Keeping rotation values within a range of 0 to 360°
44715
Exact value for $\cos 36°$
49318
Negative sign in rotation operator again
124948
How to get number of months, weeks, days and hours from now to a future time?
137391
How does the unit circle work for trigonometric ratios of non-acute angles?
106757
Work out the percentage of the day that has elapsed
71092
What are the derivatives of position with respect to time
96181
Time calculations