Answers

2015-06-09T10:30:19+05:30
Sin (50-0) = cos (90-40)= cos40
now substitute this value in the question
sin50- cos40
 = cos40-cos40
 =0
0
The Brainliest Answer!
2015-06-09T13:19:39+05:30
sin (50°-0 )- cos ( 40° - 0 )
= cos (90
° -(50°-0 ) ) - cos ( 40° - 0 )
= cos ( 40° - 0 ) - cos ( 40° - 0 )
= 0
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