Q&A for How to Solve Trigonometric Equations

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  • Question
    If I know two sides of a triangle, how can I find the hypotenuse (to the nearest whole number)?
    Community Answer
    Square the lengths of the two sides you know, add the results together, then take the square root of that result and round it to the nearest whole number.
  • Question
    How do I find the third side of a triangle if I’m only given 1 side length and 1 angle?
    Donagan
    Top Answerer
    Knowing one side and one angle is not enough information to find any of a triangle's other components.
  • Question
    What type of calculator do I need to do trigonometry?
    Community Answer
    A normal scientific calculator is fine. A graphics calculator will also work.
  • Question
    How do you get the length of a hypotenuse?
    Community Answer
    Use the Pythagorean theorem. c = √(a² + b²), where c is the hypotenuse, and a and b are the two legs of the triangle.
  • Question
    sin 58° = cos p°. What is p?
    Community Answer
    p is 32°, or the complement of 58°. (The complement of an angle is the difference between that angle and 90°.)
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