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Please explain image problem clear in step wise..................

Sudhanva G V , 6 Years ago
Grade 11
anser 1 Answers
Arun

Last Activity: 6 Years ago

 
Dear student
 
y = 2 sin a / (1+ sin a + cos a)
 
multiply and divide by (1- cos a + sin a) in Numerator and denominator.
 
hence
 
y = 2 sin a (1 – cosa + sin a) / (( 1+ sin ^2 a + 2 sina ) – cos^2 a)
 
y = 2 sin a ( 1 – cos a + sin a) / 2 sin a(1 + sina)
 
y = ( 1 – cos a + sin a) /(1+ sina)
 
hence option B is correct.
 
Regards
Arun
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