(sina+3sina-4sin^3a)/(cosa+4cos^3a-3cosa)=4sina(1-sin^2a)/2cosa(2cos^2-1)=
=2sinacosa/cos2a=sin2a/cos2a=tg2a
0.01√30000=0.01√(3*100²)=√3
36:400=Х:100
х=36*100:400
х=9%
<span>Arcsin1+arccos0-2arctg0</span>π/2 + π/2 - 2*0 = π<span><span>
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