3.7 Trigonometry Review
Students did a quiz on solving triangles. This quiz was self marked in class. Chapter 3 Test on Monday. 3.7 Trigonometry Review
We discussed answers to homework from section 3.6 Law of Cosines. There will be a quiz tomorrow on solving triangles. The Chapter 3 Test will be Mon. Oct. 31. 3.6 Law of Cosines
Students started today with a quiz on the Law of Sines. Afterwards, students worked on questions from section 3.6 Law of Cosines. We discussed the equation and how it can be used to solve for a side in the SAS case and for an angle in the SSS case. We also went over solving triangles using the Law of Cosines or a combination of the Law of Cosines and the Law of Sines. Assignment: p.150 #2af, 3af, 4, 6af, 7aj, 8aej, 9 3.5 The Law of Sines
We did 3 more examples of the Law of Sines with the SSA case in order to determine in which situation the ambiguous case turns up. The three examples included an example of a no solution problem, a 1 solution problem, and the ambiguous 2 solution problem. Assignment: p. 142 #1ad, 2af, 3af, 4ad, 5af, 6ajor, 9 3.3 Special Angles
Students started today's class with a quiz on finding the exact value of the primary trig ratios of angles. 3.5 The Law of Sines We also briefly discussed how to know when the ambiguous case needs to be considered. No new assignment was given. 3.5 The Law of Sines
Today we reviewed using the primary trig ratios to solve for missing angles or sides in a right angled triangle. Next we developed the Sine Law to more easily solve for missing sides or angles in oblique triangles. We also discussed the ambiguous case in which there may be no solution, one solution or two solutions with the given information. Assignment: p. 142 #1ad, 2af, 3af, 4ad, 5af, 6ajor, 9 Today we started with a quiz covering sections 3.1 and 3.2 focussing on drawing angles in standard position and finding the trigonometric ratios. With any remaining time students worked on previously assigned questions.
3.3 Special Angles
Today we looked at how to determine the exact value of the trigonometric ratios of certain angles. We discussed 30-60-90 and 45-45-90 triangles and how to use them to find angles between 0 and 360 degrees. Assignment: p. 126 #1agm, 2agl, 3ghl, 4ael, 5ach, 6aei, 9 3.2 Primary Trig. Ratios
Today we looked at how we can use angles in standard position to determine the primary trig ratios (sine, cosine, and tangent) of any size angle by using the reference angle. We also talked about determining angle values for each of the four quadrants. Assignment: p. 114 #1afh, 2adf, 3akr, 4aeh, 5aej, 6aegj, 7a, 8c |
AuthorGreg Sivertson Archives
May 2024
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