Q1 of 25 Page 276

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

(i) 832’ (ii) 6312’’


(iii) 375’’ (iv)


(v) 72.04°

(i) 832’

1 degree = 60 minutes





(ii) 6312’’


1 degree = 3600 seconds






⇒ 6312’’ = 1 degree 45 minutes 12 seconds


(iii) 375’’


1 degree = 3600 seconds





⇒ 375’’ = 6 minutes 15 seconds


More from this chapter

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2

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’’

 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.