Question

Find the value of θ if sin θ = 0.9975

Answer 1

0'

6'

12'

18'

24'

30'

36'

42'

48'

54'

Mean difference

0.0°

0.1°

0.2°

0.3°

0.4°

0.5°

0.6°

0.7°

0.8°

0.9°

1

2

3

4

5

6

7

8

49

0.7547

sin θ = 0.9975

From the table we get,

= 0.9974 + 0.0001

= 85° 54′ + 1′

= 85° 55′ or 85° 56′ or 85° 57