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
Marysya12 [62]
3 years ago
14

Given that sin θ = 0.5, where π/2 < θ < π , find cos θ .

Mathematics
1 answer:
kow [346]3 years ago
4 0

Answer:

cos theta is -0.866

Step-by-step explanation:

We have the range as between 90 and 180 degrees (pi is the same as 180 degrees)

The quadrant we are considering here is the 2nd quadrant

Mathematically;

if sin theta = 0.5

theta = arc•sin 0.5

theta = 30 degrees

The angle on the second quadrant is of the likes;

180-theta

so we have 180-30

and that is 150 degrees

cos (150) is thus; -0.866

You might be interested in
What are the common factors of 15,45 and 90
Nookie1986 [14]
List all the factors.

Factors of 15: 1, 3, 5, 15
Factors of 45: 1, 3, 5, 9, 15, 45
Factors of 90: 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90

The common factors of 15, 45, and 90 are 1, 3, 5, and 15.
3 0
3 years ago
A runner’s goal is to complete a mile in 4 minutes or less. The runner’s speed is 20 feet per second. Does the runner meet the g
Scilla [17]

Answer:

no, because the runner is short by 480 feet

Step-by-step explanation:

there are 5280 feet in 1 mile

5280 feet= 1 mile                             20 feet= 1 second (times by 240)

                                                               4800 feet=            240 seconds

he is 5280-4800= 480 feet less

please give me brainliest!!<3

3 0
3 years ago
What is five added to twice a number​
iren [92.7K]

2x+5

Step-by-step explanation:

let the number be x

According to the question

2x+5

hope it whould help

8 0
3 years ago
Romeo used a mirror to determine the height of Juliet’s window. He stood 0.5m from the mirror and the mirror is
Volgvan
3. 4m
Explanation:Minus
6 0
2 years ago
Ummm what this ?? Helping my sister
Radda [10]

Answer:

ok this the answer   By definition, a rectangle is a parallelogram because its pairs of opposite sides are parallel. A rectangle also has the special characteristic that all of its angles are right angles; all four of its angles are congruent. The other special case of a parallelogram is a special type of rectangle, a square.

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • Write two decimals, each less than 1, which multiply to make 0.1
    8·1 answer
  • Select the proper placement for parentheses to speed up the addition for the expression 4 + 6 + 5 
    11·2 answers
  • What is the distance between P(-7, 3) and Q(1, -4)<br><br> Round to the nearest tenth
    7·1 answer
  • Find the perimeter of the rectangle <br> (Let h = 4 cm and w =15 cm.)
    5·2 answers
  • Help me with this please
    13·1 answer
  • An angle that is one half its arc is a/n
    13·1 answer
  • Parallel lines have_slopes. Perpendicular lines have_ _ slopes ​
    9·1 answer
  • (-4, 6) and (3-7)<br> find the distance between each pair of points
    6·1 answer
  • What is 5 to the power of 8 over 5 to the power of 3 multiplied by 4
    15·2 answers
  • I NEED HELP ASAP PLEASEEEE
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!