1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
sasho [114]
3 years ago
9

If cosX = -0.2, and x is in quadrant II, then what it the value of sinX​

Mathematics
2 answers:
Tems11 [23]3 years ago
7 0

\sin x>0 when x is in quadrant II, so

\cos^2x+\sin^2x=1\implies\sin x=\sqrt{1-\cos^2x}=\sqrt{1-(-0.2)^2}\approx1.02

DerKrebs [107]3 years ago
3 0

Answer:

Step-by-step explanation:

note : cos²x + sin²x = 1

         (- 0.2)² + sin²x =1

          0.04 + sin²x = 1

sin²x = 1 - 0.04

sin²x = 0.96

sinx = √0.96  or sinx = - √0.96

in quadrant II : sinx > 0    ...so : sinx = √0.96

You might be interested in
How many fractions are equivalent to 4/5? explain
Pavel [41]
There are several fractions that are equivalent to 4/5. Some are 8/10, 80/100, 800/1000. They all equal the same decimal: 0.8
7 0
3 years ago
HELP PLEASE, ITS DUE TODAY IN AN HOUR!!
Schach [20]

Answer:

D

Step-by-step explanation:

the equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

If m > 0 , then line slopes upwards from left to right

If m < 0 , then line slopes downwards from left to right

y = 3x - 2

has m > 0 and c = - 2 , thus line slopes upwards crossing the y- axis at - 2

y = - 2x + 3

has m < 0 and c = 3, thus line slopes downwards crossing the y- axis at 3

on the graph this is the lower blue line and the red line

the solution to the system is at the point of intersection of the 2 lines

This is at point D

4 0
2 years ago
Find the value of x. Then find the missing angle measures of the polygon.
Naily [24]

The sum of the angles equals 540

There are 3 angles that measure (x - 30) and 2 angles that measure (x)

3(x - 30) + 2(x) = 540

3x - 90 + 2x = 540

5x - 90 = 540

5x = 630

x = 126

x - 30   = 126 - 30   = 96

Answer: x = 126,  x-30 = 96

8 0
4 years ago
It says circle the numbers that are prime 21, 3, 18, 51, 2, 17, 6, 1, 91,
uysha [10]
3 and 17 that’s all there is to it, prime numbers are numbers that don’t divide by anything but itself and one
8 0
3 years ago
. Dillion deposits $150 into his account. One week later, he withdraws $26. Write an addition expression to represent this situa
Lina20 [59]

Answer:

Expression = x + 150 +(- 26)

$124 higher

Step-by-step explanation:

Given

Deposit = \$150

Withdrawal = \$26

Required

Represent the situation

Determine how much higher or lower is the remaining amount

Let the initial amount in his account be represented with x

When he deposited, the balance becomes

Balance = x + 150

When he withdrew, the balance becomes

Balance = x + 150 + (-26)

Hence, the algebraic expression is

Expression = x + 150 +(- 26)

Calculating how much higher or lower

Balance = x + 150 + (-26)

Open bracket

Balance = x + 150 -26

Balance = x + 124

Recall that the initial amount in the account is x

The difference between the balance and the x is as follows

Difference = x + 124 - x

Difference = \$124

<em>Hence, the account has a higher of $124 after both transactions</em>

8 0
3 years ago
Other questions:
  • if 5 team of men each can build a house in 15 days how many houses can be build in 30 days if you have 6 team of 5 men​
    15·2 answers
  • Solving a System of Linear Equations - Applications - Item 92238
    10·1 answer
  • What is the range of f(x) ?<br> A<br> B<br> C<br> D<br> Graph and answer choices are above
    14·1 answer
  • Plz help will be marked BRAINLIEST!!<br> Thanks man!
    9·2 answers
  • The price of a DVD is $24.00 plus 8% sales tax.What is the sales tax on this DVD in dollars and cents?
    8·2 answers
  • ASAP PLEASE HELP which answer is right???
    10·1 answer
  • a rectangular bin has a perimeter of 30 inches . the length of the bin is twice the width. write and solve an equation to determ
    7·1 answer
  • 204.6 is what percent of 125? Round to the nearest tenth.
    13·1 answer
  • Find the product of smallest natural number and the smallest whole number , 보라해 ​
    15·1 answer
  • Which of the following is true
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!