sin25cos65+cos25sin65=?
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heyya..
sin25.cos65 + cos25 . sin65 .(question)
here u go with ur answer,
sin (90 - 25) .cos 65 + cos (90-25).sin65
=> cos65.cos65 + sin65.sin65
=>cos65^2 + sin65^2 (as per the identity sin^2a + cos^2a = 1)
we have answer as
=> 1..
hence ,
sin25.cos65 + cos25 . sin65 = 1
#HOPE U R CLEAR :)
sin25.cos65 + cos25 . sin65 .(question)
here u go with ur answer,
sin (90 - 25) .cos 65 + cos (90-25).sin65
=> cos65.cos65 + sin65.sin65
=>cos65^2 + sin65^2 (as per the identity sin^2a + cos^2a = 1)
we have answer as
=> 1..
hence ,
sin25.cos65 + cos25 . sin65 = 1
#HOPE U R CLEAR :)
riju09:
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