Multiple Choice Questions on What is the value of 4 3 cot2 p 6 3 cos2 150o ndash 4 cosec2 45o 8 sin p 2 ........ for SSC CGL Exam Preparation

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Multiple Choice Questions

What is the value of 4 3 cot2 p 6 3 cos2 150o ndash 4 cosec2 45o 8 sin p 2 ........

Quantitative Aptitude (CGL) Trignometry
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    What is the value of (4/3) cot2 (p/6) + 3 cos2 (150o) – 4 cosec2 45o + 8 sin (p/2)?

    25/4

    Correct Answer

    1

    Incorrect Answer

    – 7/2

    Incorrect Answer

    13/2

    Incorrect Answer
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    Explanation:

    Cot π/6 = ?3
    Cos 150 = cos(180–30) = -cos 30° = -?3/2
    Cosec 45° = ?2
    Sin π/2 = 1
    Put these values in equation
    4/3(?3)² + 3(-?3/2)² - 4(?2)² + 8*1
    (4/3)*3 + 3*3/4 - 4*2 + 8
    4+9/4 -8+8
    4+9/4
    (16+9)/4 = 25/4
    Hence, 25/4 is the answer.

    By: MIRZA SADDAM HUSSAIN
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