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
scZoUnD [109]
3 years ago
7

Find an exact value cos 75°

Mathematics
2 answers:
Drupady [299]3 years ago
5 0

Answer:

0.2588

Step-by-step explanation:

Vikentia [17]3 years ago
4 0

Answer:

(√3 - 1) / 2√2.

Step-by-step explanation:

Using the compound angle identity

cos(A + B) = cosA cosB - sinA sinB:-

cos 75

= cos (45 + 30)

= cos 45 cos 30 - sin 45 sin 30

= 1 / √2 * √3/2 - 1 / √2 *  1 / 2

= √3 / 2√2 - 1 / 2√2

= (√3 - 1) / 2√2.

You might be interested in
Given f(x)= 8x^{15}+6x^{8}-3x^{3}+5x^{2}, the degree is
igor_vitrenko [27]

Answer:

Step-by-step explanation:

2. Degree = 15

6 0
3 years ago
Plz answer what is the x interster
Ira Lisetskai [31]

Answer:

Y intercept (0,2)

X intercept (3, 0)

Step-by-step explanation:

The y intercept is the value when x = 0 (or where it crosses the y axis)

Y intercept (0,2)

The x intercept is when y =0 ( or where it crosses the x axis)

X intercept (3, 0)

6 0
3 years ago
Probability of a coin landing on heads
Viefleur [7K]

Answer:

The answer would be 50% or 1/2

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Combine the like terms to create an equivalent expression: <br> 2s-( -4s)= ?
Ghella [55]

Answer:

6s

Step-by-step explanation:

1. 2s-(-4s)

2. 2s+4s

3. 6s

6 0
3 years ago
How do you solve x^2-4X-12=0
Pepsi [2]
                                         x²  -  4x  - 12  =  0

Factor the left side:      (x + 2) · (x - 6)  =  0

The equation is true if either factor is zero.

If  (x + 2) = 0  then    x = -2 .

If  (x - 6) = 0  then     x = 6 .
3 0
3 years ago
Other questions:
  • Shanelle already has $137 from babysitting. She needs at least $625 for a new tablet. Which inequality best represents this scen
    13·1 answer
  • <img src="https://tex.z-dn.net/?f=%20%7C7%20%2B%208x%7C%20%20%3E%205" id="TexFormula1" title=" |7 + 8x| &gt; 5" alt=" |7 + 8x|
    8·1 answer
  • I don’t know how to do cross products
    14·1 answer
  • Rob cuts a 15-foot wire into 8 equal pieces. About how long is each piece?
    11·1 answer
  • What property is illustrated in the equation 15•1=15
    15·2 answers
  • Josie just bought her very first laptop , which shes been saving up for almost a year to buy.For Josie the laptop is most likely
    5·2 answers
  • How do you right 7 to the -2 power as a simple fraction
    12·1 answer
  • Round 21,839 to the nearest 100
    6·1 answer
  • What is hypotenuse of triangle​
    10·1 answer
  • Tim’s savings account pays a simple annual interest rate of 3.5%. Suppose he deposits $5,500 in the account and makes no additio
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!