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Thread: What is the value of (tan5)(tan25)(tan45)(tan65)(tan85)?

  1. May 5th 2011, 11:28 AM #1
    raed
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    What is the value of (tan5)(tan25)(tan45)(tan65)(tan85)?

    Dear Colleagues,

    Could you please help me in solving the following problem:
    What is the value of (tan5)(tan25)(tan45)(tan65)(tan85)?



    Best Regards.
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  2. May 5th 2011, 11:48 AM #2
    Opalg
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    Quote Originally Posted by raed View Post
    Dear Colleagues,

    Could you please help me in solving the following problem:
    What is the value of (tan5)(tan25)(tan45)(tan65)(tan85)?



    Best Regards.
    Hint: Look for a connection between tan(5) and tan(85) (you may find it helpful to draw a right-angled triangle).
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