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Unit 4 - Trigonometry

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  • Based on the given information, what trig ratio is being used?
    Cosine
  • Solve for x! Round your answers to 1 decimal place
    x = 5.7mm
  • True or False: when solving for the missing sides, we use the inverse trig functions
    False!
  • If you are on the ground, looking up towards the top of a cliff, what angle are you creating?
    Angle of Elevation
  • What trig ratio(s) use opposite?
    Sine, Tangent
  • What does each of the letters in SOHCAHTOA stand for?
    Sinθ = (opp/hyp), Cosθ = (adj/hyp), Tanθ = (opp/adj)
  • What are the steps to finding a missing angle on a calculator?
    Turn on ur calculator, 2nd, π, inverse trig ratio, side length, divided, side length, close ), enter
  • Based on the given information, what trig ratio is being used?
    Sine
  • For an acute angle ?, the equation sin(16) = cos(θ) is true. What is the value of θ? How do you know?
    cos(74)
  • What is the trig ratio for cos(C)?
    20/29
  • What is the six-letter word that tells you all of the Trigonometric Ratios that we can use
    SOHCAHTOA
  • Based on the given information, what trig ratio is being used?
    Sine
  • A 20 foot ladder rests against a wall. The ladder makes a 55 degree angle with the ground. How far from the wall is the base of the ladder? Round your answer to one decimal place.
    11.5 ft
  • For an acute angle ?, the equation sin(θ) = cos(54) is true. What is the value of θ? How do you know?
    sin(45) = cos(90 - 54) (they both add up to 90)
  • What trig ratio(s) use adjacent?
    Tangent, Cosine
  • Based on the given information, what trig ratio is being used?
    Tangent
  • Based on the given information, what trig ratio is being used?
    Cosine
  • When solving for a missing side, what should we do when the variable is on the bottom?
    # divided by the trig ratio
  • What is the trig ratio for sin(A)?
    30/34
  • Based on the given information, what trig ratio is being used?
    Sine
  • If you are on the top of a building and looking down towards the ground, what angle are you creating?
    Angle of Depression
  • Solve for x! Round your answers to 1 decimal place
    x = 12.5 cm
  • Solve for x! Round your answers to 1 decimal place
    x = 27.5km
  • Based on the given information, what trig ratio is being used?
    Tangent
  • What trig ratio(s) use hypotenuse?
    Sine, Cosine
  • Solve for x! Round your answers to 1 decimal place
    x = 14.0m
  • Solve for x! Round your answers to 1 decimal place
    x = 16.0m
  • What is the trig ratio for tan(z)?
    21/20
  • Based on the given information, what trig ratio is being used?
    Cosine
  • Solve for x! Round your answers to 1 decimal place
    x = 26.3cm