Alg2 lesson 13-5
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This document discusses solving an ambiguous triangle where it is not a right triangle and the measures of angles and sides are not fully known. It determines that trigonometric functions and the Law of Sines cannot be used. It identifies that the Law of Cosines is the appropriate theorem to use to begin solving since it requires only knowing the measures of three sides.
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Alg2 lesson 13-5
- 1. Solve Is this a right triangle? NO We can’t use trig functions Can we use the Law of Sines? NO We don’t know the measure of an angle and its opposite side
- 3. Solve
- 5. Solve 144 130 126 14 126
- 6. Solve
- 7. Use When you have Trig functions (sin, cos, A right triangle tan, csc, sec, cot) Law of Sines An angle and its opposite side AND one other side/angle Law of Cosines Three sides or two sides and an included angle
- 8. What would you use to begin to solve this triangle? Law of Cosines
- 9. What would you use to begin to solve this triangle? Law of Cosines
- 10. What would you use to begin to solve this triangle? Law of Sines
- 11. What would you use to begin to solve this triangle? Trig functions (sin or cos)