Today we quizzed over 4.7 - Inverse Trig Functions. If you were absent, you need to take the quiz ASAP.
Quizzes will be returned Monday.
HW #4 is to do problems 1-15 on the worksheet handed out about application of right triangle inverse trig functions, save the 2nd page for the next class where we will learn more, particularly about bearings. (Worksheet attached below.)
We started class with a warm-up, a problem about context of right triangles and angle of descent of an arriving jet to an airport. The goal was the find the angle of descent. We made a good labeled sketch, wrote a trig function equation x for the angle (it was a tangent problem) and then rewrote as an arctan equation with the solution x being the angle of descent.
We looked at the structure of the problems on the worksheet homework. The longest side is opposite the largest angle, etc. The vertices on the HW are always A, B, and C with right angle at C. The opposite sides to those angles are a, b, and c.
Use inverse to find angles, regular trig ratios to find sides. Example shown in class.
We went over Worksheet 3, answered questions. I offered a few suggestions for the quiz. Then we took the quiz.
Quiz over 4.8 will be next Wednesday.
Quizzes will be returned Monday.
HW #4 is to do problems 1-15 on the worksheet handed out about application of right triangle inverse trig functions, save the 2nd page for the next class where we will learn more, particularly about bearings. (Worksheet attached below.)
We started class with a warm-up, a problem about context of right triangles and angle of descent of an arriving jet to an airport. The goal was the find the angle of descent. We made a good labeled sketch, wrote a trig function equation x for the angle (it was a tangent problem) and then rewrote as an arctan equation with the solution x being the angle of descent.
We looked at the structure of the problems on the worksheet homework. The longest side is opposite the largest angle, etc. The vertices on the HW are always A, B, and C with right angle at C. The opposite sides to those angles are a, b, and c.
Use inverse to find angles, regular trig ratios to find sides. Example shown in class.
We went over Worksheet 3, answered questions. I offered a few suggestions for the quiz. Then we took the quiz.
Quiz over 4.8 will be next Wednesday.
section_4.8_worksheet.docx |
answers_to_4.8_worksheet_page_1.pdf |