Lesson Example Discussion Quiz: Class Homework |
Quiz In Class |
Title: Trigonometry equations |
Grade: 1400-a Lesson: S3-L5 |
Explanation: Hello Students, time to practice and review. Let us take next 10-15 minutes to solve the ten problems using the Quiz Sheet. Then submit the quiz to get the score. This is a good exercise to check your understanding of the concepts. |
Quiz: in Class
Problem Id | Problem | Options |
---|---|---|
1 |
Identify the solutions to the below equation on the interval \$0 le x < 2pi\$. \$ 1/(cosx - 1) - 1/(2cosx - 1) = - 1/(2cos^2 x - 3cosx + 1) \$ |
A) \$x = pi/6 \$ B) \$x = pi \$ C) \$x = pi/4 \$ D) \$x = pi/2 \$ |
2 |
Identify the general solution to the equation: \$ (4 cosx)/(sinx) + 3/(sin^2 x) = (6 cosx sinx)/(cos^2 x - 1)\$. |
A) \$x = arccos (- 3) + kpi, arccos (- 1/3) + kpi\$ B) \$x = arccot (- 3) + kpi, arccot (- 1/3) + kpi\$ C) \$x = arctan (- 3) + kpi, arctan (- 1/3) + kpi\$ D) \$x = arctan ( 3) + kpi, arctan (1/3) + kpi\$ |
3 |
Identify the solutions to the equation \$ tan(x - pi) + tan(x + pi/4) = 0\$ on the interval \$ - pi/2 le x le pi/2\$. |
A) \$ arctan( 1 + \sqrt2)\$ and \$ arccot(1 + \sqrt2)\$ B) \$ arccot( 1 - \sqrt2)\$ and \$ arccot(1 + \sqrt2)\$ C) \$ arctan( - 1 - \sqrt2)\$ and \$ arctan(- 1 + \sqrt2)\$ D) \$ arctan( 1 - \sqrt2)\$ and \$ arctan(1 + \sqrt2)\$ |
4 |
Identify the solutions to the equation (tan 2x)(sin 2x) = 0 on the interval \$0 le x < 2pi\$. |
A) \$ 0, pi\$ B) \$ pi/2, (2pi)/3\$ C) \$ pi/4, (3pi)/4\$ D) \$ (5pi)/3, (7pi)/3\$ |
5 |
Identify the solutions to the equation \$ tan (θ/2) - 1 = 0\$ on the interval \$0 le x < 2pi\$. |
A) \$ pi/2\$ B) \$ pi/6 \$ C) \$pi/4 \$ D) \$ (4pi)/3\$ |
6 |
Identify the solutions to the below equation on the interval |
A) \$pi/4, (3pi)/4, (5pi)/4,(7pi)/4\$ B) \$pi/4, (9pi)/4, (5pi)/4,(7pi)/4\$ C) \$(2pi)/4, (3pi)/4, (5pi)/4,(7pi)/4\$ D) \$(2pi)/4, (3pi)/4, (5pi)/4,(11pi)/4\$ |
7 |
Identify the general solution to the equation: \$sin^4(x) + 4cos^2(x) = 0\$. |
A) No real solutions B) Zero C) Infinity D) Real solutions |
8 |
Slove the equation on the interval 0 ≤ x < 2π: secx - 1 - tanx = tanx. |
A) \$x = 0 , cos^-1(5/3)\$ B) \$x = 0 , cos^-1(-3/5)\$ C) \$x = 0 , cos^-1(- 5/3)\$ D) \$x = 0 , cos^-1(3/5)\$ |
9 |
Identify the solutions to the equation \$sin (x - (pi)/3) = 0\$ on the interval 0 ≤ x < 2π. |
A) \$pi/3, (4pi)/3, (5pi)/3\$ B) \$pi/3, (2pi)/3, (5pi)/3\$ C) \$pi/3, (2pi)/3, (4pi)/3, (5pi)/3\$ D) \$(2pi)/3, (4pi)/3, (5pi)/3, (7pi)/3\$ |
10 |
Identify the general solution to the equation: \$3 sec^2(θ) + 4 tan(θ) = 5 (sec^2(θ) - 1)\$. |
A) \$tan^-1(1 - \sqrt(2)/10) + kπ , tan^-1(1 + \sqrt(2)/10) + kπ \$ B) \$tan^-1(1 - \sqrt(10)/5) + kπ , tan^-1(1 + \sqrt(10)/5) + kπ \$ C) \$tan^-1(1 - \sqrt(5)/10) + kπ , tan^-1(1 + \sqrt(5)/10) + kπ \$ D) \$tan^-1(1 - \sqrt(10)/2) + kπ , tan^-1(1 + \sqrt(10)/2) + kπ \$ |
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