To prove :- angle A = angle B. if cosA = cosb
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since it is given that cosA= cosB
angleA = angleB
because cos get cancelled out in LHS and rhs
angleA = angleB
because cos get cancelled out in LHS and rhs
Barbie615:
you are wrong
no it's right example; if cos(30°–α) = cos(α–60°) then 30°–α = α–60°
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