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NTSE Sample Paper NTSE SAT Practice Test-8

  • question_answer
    The area of an isosceles triangle is 'a' when the angle included between the two equal sides is 60%. What will be the area if the angle included between the two equal sides becomes \[120{}^\circ \]? (keeping the length of equal sides same as before).

    A) \[\frac{a}{2}\]                                    

    B) a

    C) \[\frac{3}{2}a\]                                  

    D) 2a

    Correct Answer: B

    Solution :

    Clearly, when the included angle is doubled, the height becomes half. \[\therefore \] Area remains the same.


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