Q. 1 D5.0( 1 Vote )

Find the value of the following.

sin 75o 15’

Answer :

We write sin 75° 15’ = sin 75° 12’ + 3’.


The relevant part of the sine table is given below.



From the table, we have


Sin 75° 12’ = 0.9668


Mean difference for 3’ = 0.0002


We know that mean difference is to be added in the case of sine.


sin75° 15’ = 0.9668 + 0.0002 = 0.9670


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