šŸ“¢ Too many exams? Donā€™t know which one suits you best? Book Your Free Expert šŸ‘‰ call Now!

    Question

    If cosĀ² x + sin x = 5/4, then find the value of 'sin

    x'.
    A 3/2 Correct Answer Incorrect Answer
    B ā€“1/2 Correct Answer Incorrect Answer
    C 3/4 Correct Answer Incorrect Answer
    D 1/2 Correct Answer Incorrect Answer

    Solution

    cosĀ² x + sin x = 5/4 Ā  (1 - sinĀ² x + sinx) = 5/4 Let sin x =a Ā  4a2 - 4a + 1 = 0 4a2 - 2a - 2a + 1 = 0 2 a (2a - 1) - 1 (2a - 1) = 0 (2a-1) (2a - 1) = 0 2a = 1 a = Ā½ Sinx =1/2

    Practice Next
    More Trigonometry Questions

    Relevant for Exams:

    ask-question