Prove that:  from Mathematics Introduction to Trigonometry
    • Zigya Logo

    Previous Year Papers

    Download Solved Question Papers Free for Offline Practice and view Solutions Online.

    Test Series

    Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

    Test Yourself

    Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.
    Advertisement

    Introduction to Trigonometry

    Multiple Choice QuestionsShort Answer Type

    341. Find the value of sin 30° geometrically.
    103 Views
    Answer
    342. Without using trigonometric table, evaluate: 
    fraction numerator cos space 58 degree over denominator sin space 32 degree end fraction plus fraction numerator sin space 22 degree over denominator cos space 68 degree end fraction minus fraction numerator cos space 38 degree. space cosec 32 degree over denominator tan 18 degree. tan 35 degree. space tan 60 degree. space tan space 72 degree. tan 55 degree end fraction
    85 Views
    Answer
    343. If sec2 θ = (1 + sin θ) (1 – sin θ) = k, then find the value of k.
    121 Views
    Answer
    344.

    If cot space straight theta space equals space 15 over 8 comma then evaluate fraction numerator left parenthesis 2 plus 2 sinθ right parenthesis space left parenthesis 1 minus sinθ right parenthesis over denominator left parenthesis 1 plus cosθ right parenthesis space left parenthesis 2 minus 2 cosθ right parenthesis end fraction

    85 Views
    Answer
    Advertisement
    345. Find the value of tan 60°, geometrically.
    96 Views
    Answer
    346. Evaluate: 2 over 3 cosec squared 58 degree minus 2 over 3 cot space 58 degree. space tan space 32 degree minus 5 over 3 space tan space 13 degree. space tan 37 degree. space tan space 45 degree. tan 53 degree. space tan 77 degree.
    find the value of cosec B.
    86 Views
    Answer
    347.

    If secA space equals space 15 over 7 space and space straight A plus straight B space equals space 90 degree comma find the value of cosec B.

    75 Views
    Answer
    348. Without using trigonometric tables, evaluate: 
    fraction numerator 7 space cos space 70 degree over denominator 2 space sin space 20 degree end fraction plus 3 over 2 fraction numerator cos space 55 degree. space cosec space 35 degree over denominator tan space 5 degree. space tan 25 degree. space tan 45 degree. space tan 85 degree. space tan space 65 degree end fraction
    109 Views
    Answer
    Advertisement
    Advertisement
    Zigya App

    349.

    Prove that: sec squared straight theta minus fraction numerator sin squared straight theta minus 2 sin to the power of 4 straight theta over denominator 2 cos to the power of 4 straight theta minus cos squared straight theta end fraction equals 1.

    Solution not provided.

    86 Views
  • Switch Icon Switch
    • Advertisement

    Multiple Choice QuestionsMultiple Choice Questions

    350.

    If secθ space equals space 25 over 7 comma then the values of tan θ is

    • 7 over 24
    • 27 over 7
    • 24 over 7
    • 24 over 7
    101 Views
    Answer
    Advertisement
    Flag Popup Icon
    Flag it
    Submit
    Flag Popup Icon
    Switch to
    flexipad
    Share It Icon
    Share it
    Share It
    Share it