Question

Упростить выражение: 2sin^2x+2sin^2x*ctg^2x

Answer 1

$2sin^2x 2sin^2x*ctg^2x=2sin^2x 2sin^2x*frac{cos^2x}{sin^2x}=2sin^2x$ </var></p> <p><var></var><var><img src=[/tex]=2" title="2sin^2x+2sin^2x*ctg^2x=2sin^2x+2sin^2x*frac{cos^2x}{sin^2x}=2sin^2x+" title="+2cos^2x=2" title="2sin^2x+2sin^2x*ctg^2x=2sin^2x+2sin^2x*frac{cos^2x}{sin^2x}=2sin^2x+" alt="+2cos^2x=2" title="2sin^2x+2sin^2x*ctg^2x=2sin^2x+2sin^2x*frac{cos^2x}{sin^2x}=2sin^2x+" /> 

$2sin^2x+2sin^2x*ctg^2x=2sin^2x+2sin^2x*frac{cos^2x}{sin^2x}=2sin^2x+$ 

[tex]+2cos^2x=2" />