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10th Class Mathematics Triangles Question Bank Triangles

  • question_answer
    In the figure, \[\angle \text{ABC}=\angle D\text{AC}=\text{9}0{}^\circ \], BC = 3 cm, AD = 2 cm and AB = 1 cm. What is the measure of AC + CD?

    A)  \[\sqrt{2}(\sqrt{5}+\sqrt{7})cm\]

    B)  \[\sqrt{5}(\sqrt{2}+\sqrt{7})cm\]

    C)  \[\sqrt{2}(\sqrt{7}-\sqrt{5})cm\]

    D)  \[\sqrt{7}(\sqrt{2}+\sqrt{2})cm\]

    Correct Answer: A

    Solution :

     In \[f(p)\] In \[p(x)={{x}^{2}}+3x-2\]                 \[\Rightarrow \] \[p(-1)={{(-1)}^{2}}+3(-1)-2=(-4)\]           \[p(-1)=-4\]                 \[\Rightarrow \]


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