July 2022 1 15 Report
Помогите! 40 баллов!
Упростить выражения (a-альфа)
1.[tex]\frac{(sin\frac{a}{2}+cos\frac{a}{2} )^{2} }{1+sina}[/tex]
2[tex]\frac{2sina-sin2a}{2sina+sin2a}[/tex]=tg[tex]^{2} \frac{a}{2}[/tex]
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