K(1) A(2,5)
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M(0,7) B(3,5) C(6)
E(2)
2-4sin^2, если cos^2 X=3/4
1+1-4sin^2 X = sin^2 x+cos^2 x+sin^2 x+ cos^2 X - 4sin^2 X = 2sin^2 X + 2cos^2 X - 4sin^2 X = 2cos^2 X - 2sin^2 X = 2 (cos^2 X - sin^2 X )= 2 (cos^2 X -1+cos^2 X )=2 (3/4 - 4/4 + 3/4) = 2 (6/4 - 4/4)= 2 × 2/4= 1
Ответ:
мағанда осы есепке көмек керек