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
Neko [114]
2 years ago
10

Sin10°-cos10° product and evaluate​

Mathematics
2 answers:
Elena-2011 [213]2 years ago
8 0

\\ \sf\longmapsto sin10°-cos10°

\\ \sf\longmapsto sin(90-10°)-cos10°

  • sin(90-A)=cosA

\\ \sf\longmapsto cos10-cos10

\\ \sf\longmapsto 0

Montano1993 [528]2 years ago
6 0

Question should be sin 20 cos 10 + cos 20 sin 10

remember sin (a+b) = sin a cos b + cos a sin b ?

sin 20 cos 10 + cos 20 sin 10

= sin (20+10)

= sin 30

= 1/2

You might be interested in
The Greens are moving. Their real estate agent located 81 houses listed for sale in their price range. Of those houses listed fo
poizon [28]

Answer:

We know that:

There is a total of 81 houses:

51 had a finished basement.

56 had a three-car garage.

37 had a finished basement and a three-car garage.

a)  How many had a finished basement but not a three-car garage?

51 had a finished basement, and 37 have a finished basement and the garage, then:

51 - 37 = 14 hoses have only the basement.

b) How many had a three-car garage but not a finished basement?

Same reasoning as above:

56 - 37 = 19 houses only have the garage.

c) How many had either a finished basement or a three-car garage?

Now we only count the ones that have one finished thing, in this case, we already found the number of houses that have only the garage or only the basement, then the number of houses that either had a finished basement or a finished garage is:

19 + 18 = 37 houses.

7 0
4 years ago
Mr.Ward runs a lot. He ran 45 minutes each day, 5 days each week , for 16 weeks . In that time, he ran 450 miles. What was his a
Savatey [412]

Answer:

7.5 miles per hour.

Step-by-step explanation:

We have been given that Mr. Ward runs a lot. He ran 45 minutes each day, 5 days each week, for 16 weeks.

First of all, we will find time for that Mr. Ward ran in 16 weeks.

We will multiply 5 by 16 to find number of days for that Mr. Ward ran and then we will multiply the result by 45 minutes to find the time.

\text{Time for that Mr. Ward ran in 16 weeks}=16\times 5\times 45\text{ minutes}

\text{Time for that Mr. Ward ran in 16 weeks}=3600\text{ minutes}

Now, we will divide 3600 minutes by 60 minutes to convert time into hours as:

\text{Hours}=\frac{3600}{60}=60

Now, we will divide 450 miles by 60 hours to find Mr. Ward's average speed as:

\text{Mr. Ward's average speed}=\frac{450\text{ miles}}{\text{60 hours}}

\text{Mr. Ward's average speed}=\frac{7.5\text{ miles}}{\text{ Hour}}

Therefore, Mr. Ward's average speed in 7.5 miles per hour.

7 0
3 years ago
The cross-section of a wheelchair ramp is shown.Does the ramp form a right triangle?
Naily [24]
Use the Pythagorean Theorem (which is only true for right triangles)
a^2 + b^2 = c^2

where
a = 25
b = 312
and c = 313

25^2 + 312^2 = 313^2
625 + 973244 = 97969
97969 = 97969
this is a true statement

therefore your ramp Is indeed a Right Triangle
8 0
3 years ago
Which choices are equivalent?
Mice21 [21]

Answer:

B C F are correct answers

5 0
3 years ago
Rewrite the following equation x(x)-14x+24=y in vertex form. What is the vertex?
Juliette [100K]

Step-by-step explanation:

y = x² − 14x + 24

To convert to vertex form, complete the square.  Take half of the second coefficient, square it, then add the result to both sides.

(-14/2)² = 49

y + 49 = x² − 14x + 49 + 24

y + 49 = (x − 7)² + 24

y = (x − 7)² − 25

The vertex is (7, -25).

8 0
3 years ago
Other questions:
  • What is the prime factorization of 675 using exponents?
    15·1 answer
  • If f(3)=8 and f'(3)=5 what do you know about f^-1​
    11·1 answer
  • A cube has a volume of 512 cubic mm. If all sides of the cube ae divided by 4, what will the resulting volume be?
    14·1 answer
  • 7-4[3-(4y-5)] plz help me
    8·2 answers
  • Find the equation of the line passing<br> through the points (4, 1) and (2, 9).<br> y = [? ]x + [ ]
    5·1 answer
  • I need help plzzzzzzzzzzzz
    6·2 answers
  • Solve the compound inequality 3x + 12 &lt; 6 or x – 10 &gt; 5.
    15·2 answers
  • X/5 = -3 x=____ help
    10·2 answers
  • Select the correct answer. John is a furniture maker. The graph shows the number of chairs John makes and the time it takes to m
    14·2 answers
  • • Write the equation of the line that passes through the points (-7,0) and(-3,-9). Put your answer in fully reduced point-slope
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!