Mathematics ECAT Pre Engineering Chapter 16 Solution of Trigonometric Equations Online Test With Answers

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Mathematics ECAT Pre Engineering Chapter 16 Solution of Trigonometric Equations Online Test

Sr. # Questions Answers Choice
1 Considering Cosine Rule of any triangle ABC, possible measures of angle A includes <span style="font-size: 0.95em;">Angle A is obtuse</span> <span style="font-size: 0.95em;">Angle A is acute</span> <span style="font-size: 0.95em;">Angle A is right-angle</span> <span style="font-size: 0.95em;">All of above</span>
2 In a triangle ABC, if angle A = 72° , angle B = 48° and c = 9 cm then Ĉ is <span style="font-size: 0.95em;">69°</span> <span style="font-size: 0.95em;">66°</span> 60° <span style="font-size: 0.95em;">63°</span>
3 For Cosine Rule of any triangle ABC, b2is equal to <span style="font-size: 0.95em;">a</span><sup>2</sup><span style="font-size: 0.95em;"></span><span style="font-size: 0.95em;">- c</span><sup>2</sup><span style="font-size: 0.95em;"></span><span style="font-size: 0.95em;">+ 2ab cos A</span> <span style="font-size: 0.95em;">a</span><sup>3</sup><span style="font-size: 0.95em;"></span><span style="font-size: 0.95em;">+ c</span><sup>3</sup><span style="font-size: 0.95em;"></span><span style="font-size: 0.95em;">- 3ab cos A</span> <span style="font-size: 0.95em;">a</span><sup>2</sup><span style="font-size: 0.95em;"></span><span style="font-size: 0.95em;">+ c</span><sup>2</sup><span style="font-size: 0.95em;"></span><span style="font-size: 0.95em;">- 2ac cos B</span> <span style="font-size: 0.95em;">a</span><sup>2</sup><span style="font-size: 0.95em;"></span><span style="font-size: 0.95em;">- c</span><sup>2</sup><span style="font-size: 0.95em;"></span><span style="font-size: 0.95em;">4bc cos A</span>
4 trigonometric equation conditional equation identity None
5
6 both a &amp; c
7
8
9
10 all
11 General solution of 1 + cos x = 0 is
12 The solution set of trigonometric equation contains one element two elements three elements Infinite elements
13 The solution set of sin x + cos x = 0 is
14 <div><span style="color: rgb(34, 34, 34); font-family: &quot;Times New Roman&quot;; font-size: 18px; background-color: rgb(255, 255, 248);">I and</span><span style="background-color: rgb(255, 255, 248); color: rgb(34, 34, 34); font-family: &quot;Times New Roman&quot;; font-size: 18px;">I</span><span style="background-color: rgb(255, 255, 248); color: rgb(34, 34, 34); font-family: &quot;Times New Roman&quot;; font-size: 18px;">I quadrants</span></div> <span style="color: rgb(34, 34, 34); font-family: &quot;Times New Roman&quot;; font-size: 18px; background-color: rgb(255, 255, 248);">I</span><span style="color: rgb(34, 34, 34); font-family: &quot;Times New Roman&quot;; font-size: 18px; background-color: rgb(255, 255, 248);">I and</span><span style="color: rgb(34, 34, 34); font-family: &quot;Times New Roman&quot;; font-size: 18px; background-color: rgb(255, 255, 248);">I</span><span style="color: rgb(34, 34, 34); font-family: &quot;Times New Roman&quot;; font-size: 18px; background-color: rgb(255, 255, 248);">I</span><span style="color: rgb(34, 34, 34); font-family: &quot;Times New Roman&quot;; font-size: 18px; background-color: rgb(255, 255, 248);">I quadrants</span> <span style="color: rgb(34, 34, 34); font-family: &quot;Times New Roman&quot;; font-size: 18px; background-color: rgb(255, 255, 248);">I</span><span style="color: rgb(34, 34, 34); font-family: &quot;Times New Roman&quot;; font-size: 18px; background-color: rgb(255, 255, 248);">I and</span><span style="color: rgb(34, 34, 34); font-family: &quot;Times New Roman&quot;; font-size: 18px; background-color: rgb(255, 255, 248);">I</span><span style="color: rgb(34, 34, 34); font-family: &quot;Times New Roman&quot;; font-size: 18px; background-color: rgb(255, 255, 248);">V</span><span style="color: rgb(34, 34, 34); font-family: &quot;Times New Roman&quot;; font-size: 18px; background-color: rgb(255, 255, 248);">quadrants</span> none of these
15 In which quadrant is the solution of the equation sin x + 1 = 0 <span style="color: rgb(34, 34, 34); font-family: &quot;Times New Roman&quot;; font-size: 18px; background-color: rgb(255, 255, 248);">I and</span><span style="color: rgb(34, 34, 34); font-family: &quot;Times New Roman&quot;; font-size: 18px; background-color: rgb(255, 255, 248);">I</span><span style="color: rgb(34, 34, 34); font-family: &quot;Times New Roman&quot;; font-size: 18px; background-color: rgb(255, 255, 248);">I quadrants</span> <span style="color: rgb(34, 34, 34); font-family: &quot;Times New Roman&quot;; font-size: 18px; background-color: rgb(255, 255, 248);">I</span><span style="color: rgb(34, 34, 34); font-family: &quot;Times New Roman&quot;; font-size: 18px; background-color: rgb(255, 255, 248);">I and</span><span style="color: rgb(34, 34, 34); font-family: &quot;Times New Roman&quot;; font-size: 18px; background-color: rgb(255, 255, 248);">I</span><span style="color: rgb(34, 34, 34); font-family: &quot;Times New Roman&quot;; font-size: 18px; background-color: rgb(255, 255, 248);">I</span><span style="color: rgb(34, 34, 34); font-family: &quot;Times New Roman&quot;; font-size: 18px; background-color: rgb(255, 255, 248);">I quadrants</span> <span style="color: rgb(34, 34, 34); font-family: &quot;Times New Roman&quot;; font-size: 18px; background-color: rgb(255, 255, 248);">I</span><span style="color: rgb(34, 34, 34); font-family: &quot;Times New Roman&quot;; font-size: 18px; background-color: rgb(255, 255, 248);">I</span><span style="color: rgb(34, 34, 34); font-family: &quot;Times New Roman&quot;; font-size: 18px; background-color: rgb(255, 255, 248);">I and</span><span style="color: rgb(34, 34, 34); font-family: &quot;Times New Roman&quot;; font-size: 18px; background-color: rgb(255, 255, 248);">I</span><span style="color: rgb(34, 34, 34); font-family: &quot;Times New Roman&quot;; font-size: 18px; background-color: rgb(255, 255, 248);">V</span><span style="color: rgb(34, 34, 34); font-family: &quot;Times New Roman&quot;; font-size: 18px; background-color: rgb(255, 255, 248);">quadrants</span> none of these
16 none of these
17
18
19
20 none of these
21 none of these
22 none of these
23 The solution set of the equation 1 + Cos x = 0 is __________ none of these
24 The solution set of the equation 4 cos2x - 3 + 0 is none of these
25 The solution of the equation 3 tan2x = 1 is ____________ none of these
26 none of these
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