tính 2 sin30⁰+3cos45⁰-sin60⁰ 2 cos30⁰+3sin45⁰-coc120⁰

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1. `2 sin30⁰ + 3cos45⁰ – sin60⁰`

   `= 2.\frac{1}{2} + 3. \frac{\sqrt{2}}{2} – \frac{\sqrt{3}}{2}`

   `= 1+ \frac{3\sqrt{2}}{2} – \frac{\sqrt{3}}{2}`

   `= 1 + \frac{3\sqrt{2}-\sqrt{3}}{2}`

    `2 cos30⁰+3sin45⁰-cos120⁰`

   `= 2.\frac{\sqrt{3}}{2} + 3.\frac{\sqrt{2}}{2} + \frac{1}{2}`

   `= \sqrt{3} + \frac{3\sqrt{2}}{2} + \frac{1}{2}`

   `= \sqrt{3} + \frac{1+3\sqrt{2}}{2}`  

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