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a fost răspuns

Sin2013pi=
Sin11pi/3=
Sin11pi/6=
Sin780grade=
Cos630grade=
DAU COROANA! E urgent, pls.

Răspuns :

Anonia332
sin2013pi=0
[tex]sin11pi \div 3 = - \frac{ \sqrt{3} }{2} [/tex]
[tex]sin11pi \div 6 = - \frac{1}{2} [/tex]
[tex]sin780grade = \frac{ \sqrt{3} }{2} [/tex]
cos638grade=0