Đáp án mới nhất

2

$\sin 2x$ + $4\tan x$ = $9$$\frac{\sqrt{3}}{2}$
4

$\frac{3}{\cos x^{2}}$ - $4\tan x$ - $2$ $=$ $0$
0

Cho tam giác ABC vuông goc tại A . Biết rằng cạnh AB ngắn hơn cạnh BC là 3cm nhưng lại dài hơn cạnh AC là 3cm.tính đọ dài cạnh BC
1

$1+sinx.sin2x-cosx.sinx^2 2x = 2cos^2 (\dfrac{\pi}{4}-x)$
0

$1) 9sin^{2}x - 30sinx.cosx + 25cos^{2}x = 25$$2) sin^{2}x - (1+\sqrt{3})sinx.cosx + \sqrt{3}cos^{2}x = 0$
2

$1) 9sin^{2}x - 30sinx.cosx + 25cos^{2}x = 25$$2) sin^{2}x - (1+\sqrt{3})sinx.cosx + \sqrt{3}cos^{2}x = 0$
1

Giải các phương trình sau:a)$\frac{\left ( 1-2\sin x \right )\times \cos x}{\left ( 1+2\sin x \right )\times \left ( 1-\sin x \right )}=\sqrt{3}$b)$\cos 3x+\cos 2x-\cos x-1=0$c)$\cos^{2}3x\times\cos 2x-\cos^{2}x=0$d)$2\sin ^{2}2x+\sin 7x-1=\sin x$
2

Giải các phương trình sau:a)$\frac{\left ( 1-2\sin x \right )\times \cos x}{\left ( 1+2\sin x \right )\times \left ( 1-\sin x \right )}=\sqrt{3}$b)$\cos 3x+\cos 2x-\cos x-1=0$c)$\cos^{2}3x\times\cos 2x-\cos^{2}x=0$d)$2\sin ^{2}2x+\sin 7x-1=\sin x$
2

Giải các phương trình sau:a)$\frac{\left ( 1-2\sin x \right )\times \cos x}{\left ( 1+2\sin x \right )\times \left ( 1-\sin x \right )}=\sqrt{3}$b)$\cos 3x+\cos 2x-\cos x-1=0$c)$\cos^{2}3x\times\cos 2x-\cos^{2}x=0$d)$2\sin ^{2}2x+\sin 7x-1=\sin x$
2

Giải các phương trình sau:a)$\frac{\left ( 1-2\sin x \right )\times \cos x}{\left ( 1+2\sin x \right )\times \left ( 1-\sin x \right )}=\sqrt{3}$b)$\cos 3x+\cos 2x-\cos x-1=0$c)$\cos^{2}3x\times\cos 2x-\cos^{2}x=0$d)$2\sin ^{2}2x+\sin 7x-1=\sin x$
2

Giải các phương trình sau:a)$\frac{\left ( 1-2\sin x \right )\times \cos x}{\left ( 1+2\sin x \right )\times \left ( 1-\sin x \right )}=\sqrt{3}$b)$\cos 3x+\cos 2x-\cos x-1=0$c)$\cos^{2}3x\times\cos 2x-\cos^{2}x=0$d)$2\sin ^{2}2x+\sin 7x-1=\sin x$
1

Giải các phương trình sau:a)$\frac{\left ( 1-2\sin x \right )\times \cos x}{\left ( 1+2\sin x \right )\times \left ( 1-\sin x \right )}=\sqrt{3}$b)$\cos 3x+\cos 2x-\cos x-1=0$c)$\cos^{2}3x\times\cos 2x-\cos^{2}x=0$d)$2\sin ^{2}2x+\sin 7x-1=\sin x$
1

$sin^2 x +4\sin x +\sin x\cos x +2\cos x -2cos^2 x +4=0$
1

$sin^2 x +4\sin x +\sin x\cos x +2\cos x -2cos^2 x +4=0$
1

$sin^2 x +4\sin x +\sin x\cos x +2\cos x -2cos^2 x +4=0$
2

Giải phương trình lượng giác sau : $2sin2x-cos2x = 7sinx + 2cosx -4$
2

$4sin2x^{2}+sin6x^{2}-4sin2x.sin6x^{2}=0$
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