ixambee.com
New RBI Grade B 2025 Notification will come Soon! Enroll Here

    • My Home
      • Dashboard
      • My Account
      • My Courses
      • My Performance
      • Packages
      • Logout
    • youtube Free Videos
      Youtube VideosLive Classes RBI Grade BLive Classes SEBI Grade ALive Classes IBPS PO & RRB
    • Previous Year Paper
    • Exams
    • Online Course
    • Free Mock Test
    • General Awareness
    • Daily Practice
    • All Courses
    • Private Jobs New
    • Testimonials
    ixambee mentorbee
    1. Home
    2. Questions
    3. Quantitative Aptitude
    4. Trigonometry
    5. If sin3A = cos(5A-30°), then what is the value of A? Given that 3A is an acute angle.

    Question

    If sin3A = cos(5A-30°), then what is the value of A?

    Given that 3A is an acute angle.
    A 16 Correct Answer Incorrect Answer
    B 15 Correct Answer Incorrect Answer
    C 29 Correct Answer Incorrect Answer
    D 10 Correct Answer Incorrect Answer

    Solution

    Always remember that sin & cos are compliment to each other So sin ɵ = cos( 90-ɵ) So it is given that sin3A = cos(5A-30°) Hence 3A + 5A - 30° = 90° So 8A - 30° = 90° or 8A =90°+30° = 120° or A =  = 15°

    Practice Next
      More Trigonometry Questions
    • Who has written the book ‘Fearless Governance’, published in January 2021, describing her stint as Governor?

    • If all three interior angles of a triangle are less than 90°, it is called a/an:

    • What significant step has been taken towards indigenisation in defence manufacturing as indicated by the Ministry of Defence?

    • Which of the following has been INCORRECTLY listed as a condition for becoming a citizen of India?

    • When is the National Youth Day celebrated ? 

    • Who inaugurated the National Urban Cooperative Finance and Development Corporation Limited (NUCFDC) in New Delhi?

    • In March, 2022 who was appointed as the chairman of National Financial Reporting Authority(NFRA)?

    • Which of the following is NOT an example of rocks?

    • Baiju Dharmajan is famous for which of the musical instrument?

    • What is the global rank of Hindon Airbase among the world's airbases?

    Relevant for Exams:

    • RRB NTPC

    Please Register/Login to Download Question

    I Pledged to:

    Please Enter Details

    call-back
    Please enter Name We'll never share your email with anyone else.
    Please enter Correct Mobile Number We'll never share your email with anyone else.

    Thank You

    +91-9205524028 Available Mon-Sat (10 AM to 7 PM)

    [email protected]

    © ATOZLEARN EDUTECH PRIVATE LIMITED All rights reserved.

    Update Address

    Please enter complete address
    Please enter pincode
    Please enter State
    Please enter City

    Download the app

    ×
    QR Code
    Get Started with ixamBee

    Start learning 50% faster. Sign in now

    Please enter Mobile Number or Email Please enter valid Mobile Number or Email
    Please enter Mobile Number Please enter valid Mobile Number
    Email id already Exists Please Enter valid Email Address
    Please enter Mobile Number or Email Please enter valid Mobile Number or Email
    Mobile Number id already Exists Please Enter valid Mobile Number
    Please enter valid OTP Mail sent on your email

    Get Started with ixamBee

    Start learning 50% faster. Sign in now
    -->