Section+4.2

these problems: WE DON'T HAVE TO KNOW SECTION 4.2 FOR THE MIDTERM. Guess I won't bother posting my answers. May you now sleep a little easier, my peers. || A: True - but i'm not sure how to justify. i looked at the diagram on p 360. A2: True because of the definition of tangent and I used the chart on pg 360. || True - it is called SOH CAH TOA and we will talk more about it after the break. || its cos is divided by a greater # and thus results in a smaller answer. A2: False because the cosine of the bigger angle will have a smaller value than the cosine of the smaller angle. || correct || ? A2: E sec 90 degrees equals empty set The empty set is not a real number A-D are all real numbers || correct || and the adjacent is 3. so sine is 4/5 A2: A because the opposite side is 3 and the hypotenuse is 5, thus making the sine 3 over 5. || Answer is A ... by SOH CAH TOA .... more later! || negative of that. A2: D. To make a line perpendicular the two slopes must have a product of -1. The sine times the opposite of the cosecant equals -1. || correct ... good explanations! || for the result to reach 3.14... A2: ? || correct ... cosine has a range of [-1,1] which does not include the value of PI (3.14) ||
 * Student Answers || Student Feedback || Teacher Feedback ||
 * 67. L: Attention all ye good Trig students who are doing all
 * 68. || A: False bc if angle a is greater than angle b then
 * 69. || A: I have no idea why any of those # wouldn't be real #s
 * 70. || A: C because the hyp would b 5, then the opposite side is 4
 * 71. || A: D the reciprocal of sine is csc and you have to take the
 * 72. || A: B the hypotenuse can't be the denominator bc its too big