September 2018 2 31 Report

wykaż podane tożsamośći

a) 1+ctg alfa= sin alfa + cos alfa/sin alfa

b) 1 + tg²alfa= 1/cos²alfa

c)sin⁴alfa - cos⁴alfa= sin²alfa - cos²alfa

d) (1 + sin alfa)(1/cos alfa - tgalfa)= cos alfa

/-kreska ułamkowa ;)


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