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
Paladinen [302]
2 years ago
13

Given sin0= 3/7, and tan0 <0, what is the value of coso?

Mathematics
1 answer:
spin [16.1K]2 years ago
8 0

sin θ = 3 / 7 = .429

sin^2 θ + cos^2 θ = 1      trig identity

9/49 + cos^2 θ = 1

cos^2 θ = 40 / 49 = .816       cos θ = .903

Check .429^2 + .903^2 = 1

cos .903 = 25.4 deg

In the second quadrant sin = +, cos = -, tan = -

So 25.4 deg in the second quadrant = 180 - 25.4 = 154.6 deg

Check:

sin 154.6 = .428

cos 154.6 = -.903

tan 154.6 = -.475

You might be interested in
(04.02 MC) Are the following figures similar? ​
Kitty [74]

Answer:

B correct me if i am wrong!

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
the actual length of a rectangular platform used for assembeling robots is 6 feet. in amal's drawing, the platform measures 1.2
saw5 [17]

Answer:

Actual width = 5 feet.

Step-by-step explanation:

The ratio of 1.2 to 1  equals the ratio of length to width.

1.2 / 1  = 6 / w  where w is the actual width.

1.2w = 6

w = 6/1.2

w = 5.

3 0
3 years ago
I need some help please!<br> K is the midpoint or segment JL. JL=3x-15 <br> JK=18<br> Find x.
vazorg [7]

Because K is the midpoint of JL and JK = 18, KL must also equal 18. So the equation would be 3x - 15 = 36 because you add 18 + 18. You then add 15 to both sides to get 3x = 51. Then you divide by 3 on both sides to get x = 17.

4 0
3 years ago
I REALLY need help with these 3 questions plz!!!!
Tanzania [10]

Answer:

6. No. See explanation below.

7. 18 months

8. 16

Step-by-step explanation:

6. To rewrite a sum of two numbers using the distributive property, the two numbers must have a common factor greater than 1.

Let's find the GCF of 85 and 99:

85 = 5 * 17

99 = 3^2 + 11

5, 3, 11, and 17 are prime numbers. 85 and 99 have no prime factors in common. The GCF of 85 and 99 is 1, so the distributive property cannot be used on the sum 85 + 99.

Answer: No because the GCF of 85 and 99 is 1.

7.

We can solve this problem with the lest common multiple. We need to find a number of a month that is a multiple of both 6 and 9.

6 = 2 * 3

9 = 3^2

LCM = 2 * 3^2 = 2 * 9 = 18

Answer: 18 months

We can also answer this problem with a chart. We write the month number and whether they are home or on a trip. Then we look for the first month in which both are on a trip.

Month                Charlie          Dasha

1                          home             home

2                          home             home

3                          home             home

4                          home             home

5                          home             home

6                         trip                home

7                          home             home

8                          home             home

9                          home             trip

10                         home             home

11                         home             home

12                         trip               home

13                         home             home

14                         home             home

15                         home             home

16                         home             home

17                         home             home

18                         trip                 trip

Answer: 18 months

8.

First, we find the prime factorizations of 96 an 80.

96 = 2^5 * 3

80 = 2^4 *5

GCF = 2^4 = 16

Answer: 16

7 0
3 years ago
What is the distance between points (-6,8) and (-3,9)
SpyIntel [72]
The distance between points (-6,8) and (-3,9) is 9 units
6 0
3 years ago
Other questions:
  • The legs of a right triangle are 6 units and 7 units. What is the length of the hypotenuse?
    9·1 answer
  • What is the product of 6x – y and 2x – y + 2? A=8x2 – 4xy + 12x + y2 – 2y B=12x2 – 8xy + 12x + y2 – 2y C=8x2 + 4xy + 4x + y2 – 2
    5·2 answers
  • To raise money for a local charity, students organized a wake-a-thon
    13·1 answer
  • Find a completely simplified expression for the perimeter (2
    14·1 answer
  • In a recent study of 42 eighth graders, the mean number of hours per week that they watched television was 19.6. Assume the popu
    15·1 answer
  • Help with my math homework
    15·1 answer
  • I need the answer, please help :)
    9·2 answers
  • Plz help i'll give thanks and brainliest
    9·1 answer
  • An object is spinning around a circle at a rate of 420 revolutions per minute. If the circle has a diameter of 8 feet, what is i
    7·1 answer
  • Consider f(x) = 4x^3 – 5, g(x) = 2x + 5 and h(x) =2x^2+2x. Which statement about (f + g – h) is true?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!