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4.3 finding missing angles

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Inverse trig ratios, including sin-1, cos-1, and tan-1, are used to solve for missing angle measures. When given a decimal value for sin, cos, or tan, the corresponding inverse trig function is used to find the angle measure to the nearest degree. When given a triangle, the appropriate trig ratio is set up and the inverse function is then used to find the measure of the indicated angle to the nearest degree.

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4.3 finding missing angles
Inverse trig ratios are used to solve for missing angle measures. They include: sin-1 cos-1 tan-1
When given a decimal value: Find each angle measure to the nearest degree. sin慮 = 0.7193 cos慮 = 0.3907 tan慮 = 0.6009
When given a triangle: Set up the appropriate ratio, then use the inverse. Find the measure of the indicated angle to the nearest degree.
Find the measure of the indicated angle to the nearest degree.
Find the measure of the indicated angle to the nearest degree. 1. tan慮 = 1.6003 2.

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4.3 finding missing angles

  • 2. Inverse trig ratios are used to solve for missing angle measures. They include: sin-1 cos-1 tan-1
  • 3. When given a decimal value: Find each angle measure to the nearest degree. sin慮 = 0.7193 cos慮 = 0.3907 tan慮 = 0.6009
  • 4. When given a triangle: Set up the appropriate ratio, then use the inverse. Find the measure of the indicated angle to the nearest degree.
  • 5. Find the measure of the indicated angle to the nearest degree.
  • 6. Find the measure of the indicated angle to the nearest degree. 1. tan慮 = 1.6003 2.