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
aleksley [76]
3 years ago
13

Sin75 in sure form using trigonometric identity

Mathematics
2 answers:
Lyrx [107]3 years ago
6 0

Answer:

sin75°=sin(45°+30°)=(√6+√2)/4

Step-by-step explanation:

sin75°=sin(45°+30°)

=sin45°*cos30°+cos45°*sin30°

=(√2/2)* (√3/2)+ (√2/2)*(1/2)

=(√6+√2)/4

<h2>Brainliest? Please! </h2>

baherus [9]3 years ago
5 0

Answer:

<em>sin75°=sin(45°+30°)=(√6+√2)/4</em>

Step-by-step explanation:

<em>sin75°=sin(45°+30°)</em>

=sin45°*cos30°+cos45°*sin30°

=(√2/2)* (√3/2)+ (√2/2)*(1/2)

=(√6+√2)/4

You might be interested in
My geometry teacher doesn't really teach so I need help!
stepladder [879]

Answer:

g(3) = 6

Step-by-step explanation:

The right side of the equation is the part with all the information for the doing of the math.

x^2 - 3 means square the number and then subtract 3.

On the left side of the equation is the g(x). g(x) or f(x) or k(x) is literally just y. Someone could ask what is f(x)? It is y.

What is g(x)? It is y.

What is g? It is the name of the function. So instead of saying ..."the thing where you square a number and then subtract 3..." you can just say "g". Now the (x) beside g DOESNOT mean times, bc sometimes parenthesis means times. THIS IS NOT TIMES!

The (x) is like a billboard. Tells you who will be starring as x in the work on the right side of the equation.

If you see g(x)=x^2-3

then whatever is in the ( ) on the left, put that in the place of x on the right.

g() = ^2 - 3

g(12) = 12^2 - 3

g(-7) = (-7)^2 - 3

or like your question

g(3) = 3^2 - 3

do the calculation

g(3) = 9 - 3

g(3) = 6

done! Hope this helps!

3 0
2 years ago
.   Multiply (x + 3)(x – 3).
konstantin123 [22]
X × x = x^2
x × -3 = -3x
3 × x = 3x
3 × -3 = -9

x^2 + 3x - 3x - 9
So I would agree with C because the -3x and the 3x cancel each other out. I hope this helps!
8 0
3 years ago
Uhm help please no links -^-
devlian [24]

Answer:

<u>x = 58</u>

Step-by-step explanation:

180 - 148 = 32

32 + 90 + x = 180

122 + x = 180

180 - 122 = x

x = 58

Have a nice day!

6 0
2 years ago
Read 2 more answers
If 1 box cost rs 45 find the cost of 9 boxes​
jarptica [38.1K]

Answer:

9 boxes cost Rs 405

Step-by-step explanation:

1 box costs 45.

so, how much are 2 boxes ? what do you think ?

right, twice as much : 2 × 45 = 90

how much are 3 boxes ?

now it is three times the cost of 1 box : 3 × 45 = 135

do you see the pattern ?

it is really simple.

that is also the origin why we describe a multiplication by "times". we take a single item so and so many times.

when you see something like this, you know, they are talking about multiplication.

so, here we want to know how much 9 boxes cost.

therefore,

9 × 45 = 405

is the answer.

6 0
2 years ago
Please answer ASAP. will give brainliest
Margarita [4]

12 × 12=144

12 × 20 = 240

240 + 144 = 384

3 0
3 years ago
Other questions:
  • What are the x-intercepts of the quadratic function y=x^2-x-2
    12·2 answers
  • Fill in the blanks to create a true statement.
    10·1 answer
  • Problem 3
    6·2 answers
  • If a triangle has side lengths of 8 cm, 12 cm, and 14 cm, what type of a triangle is it?
    14·1 answer
  • 6 meters to 60 centimeters
    5·1 answer
  • One vertex of a polygon is located at (3, –2). After a rotation, the vertex is located at (2, 3). Which transformations could ha
    8·2 answers
  • FIND sin0 WHERE 0 IS THE ANGLE SHOWN. GIVE AN EXACT VALUE, NOT A DECIMAL APPROXIMATION. Branliest​
    7·1 answer
  • I’ll give brainliest
    11·1 answer
  • So my math teacher is the type that if you don’t show your work you don’t get credit and well I for my work paper at home and sh
    13·2 answers
  • Evaluate<br> Enter the number that belongs in the green box
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!