The circular measure of the included angle formed by the

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The circular measure of the included angle formed by the hour hand and minute hand of a clock at 3 p.m. will be

The hour hand of a watch traces an angle of 30° in an hour.
∴ Angle traced at 3 O’clock
= 3 × 30° = 90°
∵ 180° = π radian

∴ 90° =	π	× 90°
	180

=	π	radian
	2

	5π
	12