Please answer with explanation q no. 5
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we know that ,
cos * = sin ( 90 - * )
cos 40 = sin (90 - 40 ) = sin 50 - (1)
From 1
sin 40 + sin 50 = sin 90
as we know, sin 90 = 1
therefore, sin 40 + cos 40 = 1
PLEASE MARK AS BRANILIST
cos * = sin ( 90 - * )
cos 40 = sin (90 - 40 ) = sin 50 - (1)
From 1
sin 40 + sin 50 = sin 90
as we know, sin 90 = 1
therefore, sin 40 + cos 40 = 1
PLEASE MARK AS BRANILIST
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