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The Brainliest Answer!
2016-04-12T11:38:42+05:30
sin 105 = sin (60+45) = sin 60 cos 45 + cos 60 sin 45 = √3/2.1/√2 + 1/2.1/√2 = 0.9659
2 5 2
WHY U WRITTEN COS 45
It is formula: Sin (A+B) = SinAcosB+cosAsinB
OK
thanks :)
2016-04-12T11:50:50+05:30
Sin 105° = sin ( 90 ° + 15°)
              = cos 15°
              = (√3 +1)/ 2√2
1 5 1
brainliest please ...................needed