Tamamen basitleştirin: 1 / cot2x - 1 / cos2x?

Tamamen basitleştirin: 1 / cot2x - 1 / cos2x?
Anonim

Cevap:

# Rarr1 / (cot2x) -1 / (cos2x) = (SiNx-cosx) / (SiNx + cosx) #

Açıklama:

# Rarr1 / (cot2x) -1 / cos2x #

# = (Sin2x) / (cos2x) -1 / (cos2x) #

# = - (1-2sinx * cosx) / (cos2x) #

# = - (cos ^ 2x-2cosx * sinx + sin ^ 2x) / (cos2x) #

# = - (cosx-SiNx) ^ 2 / ((cosx + SiNx) (cosx-SiNx) #

# = (SiNx-cosx) / (SiNx + cosx) #