Use tables to find sine of :

(i) 21°

(ii) 34° 42'

(iii) 47° 32'

(iv) 62° 57'

(i) From table,

sin 21° = 0.3584

Hence, sin 21° = 0.3584

(ii) From table,

sin 34° 42' = 0.5693

Hence, sin 34° 42' = 0.5693

(iii) From table,

sin 47° 30' = 0.7373

Difference of 2' = 0.0004       [To add]

∴ sin 47° 32' = 0.7373 + 0.0004 = 0.7377

Hence, sin 47° 32' = 0.7377

(iv) From table,

sin 62° 54' = 0.8902

Difference of 3' = 0.0004       [To add]

∴ sin 62° 57' = 0.8902 + 0.0004 = 0.8906

Hence, sin 62° 57' = 0.8906