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Question Number 91038 by M±th+et+s last updated on 27/Apr/20
ifsin(α2)=45andcos(β2)=35provesin(α)=cos(β)
Commented by jagoll last updated on 27/Apr/20
sinα=2sin(α2)cos(α2)=2×45×35=2425cosβ=2sin(β2)cos(β2)=2×35×45=2425
Answered by $@ty@m123 last updated on 27/Apr/20
sin2α2+cos2β2=42+3252sin2α2+cos2β2=1⇒α2=β2⇒α=β
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