Show that sin 23 degrees + sin 37 degrees = cos 7 degrees
Show that sin 23 degrees + sin 37 degrees = cos 7 degrees
Varad Patil , 8 Years ago
Grade 11
Trigonometry> Show that sin 23 degrees + sin 37 degrees...
1 AnswersVikas TU
Last Activity: 8 Years ago
Dear Varad,
Apply sinc + sind formulae:
SinC + SinD = 2Sin[(C+D)/2]Cos[(C-D)/2]
thus it becomes, = > 2sin30cos7 = 2*cos7/2 = cos7
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