Question

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Simplifique as expressões:
/> a) sen a tg a cosec a / cos a cotg a sec a

b) sex x cos² x / cossec x sen² x

c) tg x cotg x cos x cossec x

Answer 1

a)sena . sena/cosa . 1/sena : cosa . cosa/sena . 1/cosa = sena/cosa : cosa / sena = = sen²a/cos²a = tg²a

b)1/cosx . cosx²x : 1/senx . sen²x = cosx/senx = cotgx

c) senx / cosx . cosx / senx . cosx . 1/senx = cosx / senx = cotgx