Q2 of 25 Page 276

Let us determine the circular values of the followings

(i) 60° (ii) 135°


(ii) -150° (iv) 72°


(v) 22°30’ (vi) -62°30’


(vii) 52°52’30’’

(i) 60°

∵ 180° = π




(ii) 135°


∵ 180° = π




(ii) -150°


∵ 180° = π




(iv) 72°


∵ 180° = π




(v) 22°30’


⇒ 20° + 30’





∵ 180° = π




(vi) -62°30’


⇒ -60° - 30’






(vii) 52°52’30’’


⇒ 52° + 52’ + 30’’






∵ 180° = π




More from this chapter

All 25 →
1

Let us express the following into degrees, minutes and seconds.

(i) 832’ (ii) 6312’’


(iii) 375’’ (iv)


(v) 72.04°

3

In ΔABC, AC=BC and BC is extended upto the point D. If ∠ACD=144°, then let us determine the circular value of each of the angles of ΔABC.

 4

If the difference of two acute angles of a right-angled triangle is , then let us write the sexagesimal values of two angles.

 5

The measure of one angle of a triangle is 65° and other angle is ; let us write the sexagesimal value and circular value of third angle.