natashanunez natashanunez

Today at 9:13 PM
Mathematics

Answered

If 3cot^2x - 5cotx = -2, then cotx = _____.
A. -2, -1/3
B. -1, -2/3
C. 1, 2/3
D. 2, 1/3

Answer :

Today at 9:18 PM

3cot²x - 5cotx = -2

Lets pretend cotx = t

3t² - 5t = -2
3t² - 5t + 2 = 0

factor polynomial
(3t-2)(t-1) = 0

3t-2 = 0
t-1 = 0

then "t" which is also cotx is equal to 1 or 2/3

Answer Link

Other Questions

During a physics lab, students added weights of different masses to aspring. After adding each weight to the spring, they measured how far theweight was from th

can you answer this. thank you

Personal finance Funding a retirement goal. Austin Miller wishes to have $800,000 in a retirement fund 20 years from now. He can create the retirement fund by m

exercise after work, Albert (A) went running and Tanisha (T) walked for exercise. Their times and distances are showing in the graph below. How much as Albert r

While solving an equation 2x^2+32=0 the answer calculated is x=+-4i I understand the +- means the answer can be positive or negative but what does the i mean

The perimeter of a parallelogram whose adjacents sides measure 6 cm and 11 cm is

Pls solve this it's urgent

Pesiy koshika kise kahate hain class 9 biology in hindi

ek dukaan dar apne saman pr jo usne 3000 rupay me khareeda hai to kitna mulay aangkit karna chahaye ki us mulay pr 25 % ki choot dene pr bhi use 10% laabh ho

Which of the following is not a intellectual property?a) Company logob) Softwarec) Composed Musicd) All of theseandosses them as o

Which of the following is a parent function?O A. f(x) = -3x° +1ОВ.B. f(x) = 2*O c.C. f(x)=23*O D. f(x)=3* - 5

7. Julie has $250 to plan a party. There is a one-time fee of $175 to reserve a room. It also cost $1.25 perperson for food and drinks. What is the maximum numb

NameProbabilityConditional ProbabilityIndependent Practice1. In a monthly report, the local SPCA states that it currently has 24 dogs and 18 catsavailable for a

Please help me with 24For the following exercises, write the equation for the hyperbola in standard form if it is not already, and identify the vertices and foc

The diagram below shows an equilateral triangle ABC, with each side 3 cm long. The side [BC] is extended to D so that CD = 4 cm.What is the length of side AD?Ro

Given the equation below, how many moles of nitrogen gas (N2) areneeded to react with 7.5 moles of hydrogen gas (H2)?N2+ 3H2 —>2 NH3

I’ve been working on these similar questions but coming to this question. I found myself being stuck.

which statement is true

The vertex of a quadratic function is (2, -1) and its y-intercept is 7. Find the function,

Consider the parabola given by the equation: f ( x ) = − 2 x 2 − 12 x − 9 Find the following for this parabola: A) The vertex: B) The vertical intercept is the