8in 1S

1.	8in 1S
Answer» sin15°=(√3+1)/2√2 This is because sin15° is basically sin(45°-30°). So if you break it up:- sin(45°-30°)=sin45° cos30°- cos45° sin30° Accordingly putting the respective values you'll get the value of sin15° sin15=sin(45–30). =sin45.cos30-cos45.sin30. =(1/2^1/2).(3^1/2)/2- (1/2^1/2) .(1/2). =(3^1/2 - 1)/(2)^3/2. Thanks

Answer»

sin15°=(√3+1)/2√2

This is because sin15° is basically sin(45°-30°). So if you break it up:-

sin(45°-30°)=sin45° cos30°- cos45° sin30°

Accordingly putting the respective values you'll get the value of sin15°

sin15=sin(45–30).

=sin45.cos30-cos45.sin30.

=(1/2^1/2).(3^1/2)/2- (1/2^1/2) .(1/2).

=(3^1/2 - 1)/(2)^3/2.

Thanks

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