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Question Number 194662 by SANOGO last updated on 12/Jul/23

$${\int }_0^{\frac{\mathrm{\Pi }}{2}}\sqrt{4{sin}^{2}t+{cos}^{2}t}dt$$

Commented by Frix last updated on 12/Jul/23

$$\mathrm{Same}\mathrm{as}\mathrm{before}:$$$${4\sin }^{2}t+{\cos }^{2}t=1+{3\sin }^{2}t$$

Commented by SANOGO last updated on 12/Jul/23

$$okthankyou$$

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