Упростить:
А) [tex]2sina+\frac{2cosa^{2} }{1+sina}[/tex]
Б) [tex]1+sin(\pi +a) * cos(a+\frac{3\pi }{2} )-cosa^{2}[/tex]
А) [tex]2sina+\frac{2cosa^{2} }{1+sina}[/tex]
Б) [tex]1+sin(\pi +a) * cos(a+\frac{3\pi }{2} )-cosa^{2}[/tex]
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Answers & Comments
А)
2sin(a)+2-2sin(a)=2
Б)
1-1=0