Multiple Choice Questions on Find the value of 16 radic 3 Cos50 deg Cos10 deg Cos110 deg Cos60 deg ........ for Mathematics - All Exams Preparation

Back to Main Page

Multiple Choice Questions

Find the value of 16 radic 3 Cos50 deg Cos10 deg Cos110 deg Cos60 deg ........

Quantitative Aptitude ( CCS) Trignometry
    Download Solution PDF

    Find the value of 16 /√3 (Cos50°Cos10°Cos110°Cos60°).

    1

    Incorrect Answer

    2

    Incorrect Answer

    -1

    Correct Answer

    -2

    Incorrect Answer
    छोटे Courses बड़े Results
    Master Trignometry
    Prepare through Micro-courses
    Try Now
    Explanation:

    We have cos x cos (60 – x ) cos (60 + x )
    = cos x (cos x cos 60 + Sin x Sin 60°) (cos x cos 60° – Sin x Sin 60°)
    = cos x (cos2x cos260° – Sin2x Sin260°)

    Thus,
    cos x ° cos (60 – x )° cos (60 + x ) = 1/4cos (3 x )

    By: Amit Kumar
    ProfileResources

    Let's Discuss

    Master
    Trignometry
    With abhipedia
    Micro Courses
    Try Now
    What our students have to say
    Review on us
    Download Abhipedia Android App

    Access to prime resources

    Downlod from playstore
    download android app download android app for free