Q15 of 25 Page 276

Let us write the circular value of an angle formed by the end point of hour hand of a clock in 1 hour rotation.

In one complete circle of 12 hours

It completes 2π angle


⇒ In 1 hour, it’ll complete




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15

If the value of an angle in degree is D and in radian is R; then let us determine the value of

15

Let us write the value of complementary angle of the measure 63°35’15’’

 15

If the measures of two angles of a triangle are 65°56’55’’ and 64°3’5’’, then let us determine the circular value of third angle.

 15

In a circle, if an arc of 220 cm. length subtends an angle of measure 63° at the centre, then let us determine the radius of the circle.