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Set 2

Soal 39

39

Nomor 39

Jika [tanx11tanx][cos2xsinxcosx]=[ab]12\begin{bmatrix} \tan x & 1 \\ 1 & \tan x \end{bmatrix} \begin{bmatrix} \cos^2 x \\ \sin x \cos x \end{bmatrix} = \begin{bmatrix} a \\ b \end{bmatrix} \frac{1}{2} dimana b=2ab = 2a, maka 0xπ0 \leq x \leq \pi yang memenuhi adalah....

  1. π6\frac{\pi}{6}
  2. π12\frac{\pi}{12}
  3. 5π6\frac{5\pi}{6}
  4. 5π12\frac{5\pi}{12}