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
inessss [21]
4 years ago
11

Can someone the solve the 77th one

Mathematics
1 answer:
stiks02 [169]4 years ago
4 0
Prove sin^6 a + cos^6 a =1-3sin^2 a cos^ a 

1)  sin^6 a + cos^6 a = (sin^2 a)^3 + (cos^2 a)^3
2) a^3 + b^3 = (a+b) (a^2 - ab + b^2)
3)  (sin^2 a)^3 + (cos^2 a)^3 = (sin^2 a + cos^2 a) (sin^4 a - sin^2 a* cos^2 a) + cos<span>^4 a)
4) </span><span>(sin^2 a + cos^2 a) = 1
5 ) </span>sin^6 a + cos^6 a  = sin^4 a + cos^4 a - sin^2 a* cos^2 a<span>
6) a</span>^4 + b^4 = (a^2 +b^2 )- 2 a^2 b^2 
7) sin^4 a + cos^4 a -sin^2 a* cos^2 a =(sin^2 a + cos^2 a)-2sin^2 acos<span>^2 a
8) </span>sin^6 a + cos^6 a  = 1- 2sin^2 a cos^2 a - <span>sin^2 a* cos^2 a
9) </span><span>sin^6 a + cos^6 a  = 1- 3 sin^2 a cos^2 a</span>
You might be interested in
5 2/3 divided by 3/2
Zinaida [17]

Answer: 34/9

Step-by-step explanation:

5  2/3  /   3/2

= 17/3  /   3/2

=17/3 x 2/3        [reciprocal]

=34/9

Hope it helped u,

pls mark as the brainliest

^_^

7 0
3 years ago
Read 2 more answers
Simplify the following expression: 3m-5n+6m-8n
vichka [17]

3m - 5n + 6m - 8n \\ 3m + 6m - 5n - 8n \\ 9 m- 13n

5 0
3 years ago
Read 2 more answers
Find the measure of b+d. A. 74 B. 90 C. 32 D. 58
Sav [38]

Answer:

B. 90°

Step-by-step explanation:

Quadrilateral inscribed in the circle with center O is a cyclic quadrilateral.

Opposite angles of a cyclic quadrilateral are supplementary.

Therefore,

(b + d) + (32° + 58°) = 180°

b + d + 90° = 180°

b + d = 180° - 90°

b + d = 90°

4 0
4 years ago
A submarine was located 800 feet below sea level. There is a drone
fgiga [73]

Answer:

1,050

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Mary buys 8 widgets for $40.00 she adds $1.00 in enhancements to each widget and sells them for $9.00 each. What is Mary's estim
Maslowich
The gross profit margin is calculated using the following rule:
gross profit margin = total profit / total sales

Now, we need to get the values of total profit and total sale:
total profit = <span>9*8-(40+8)=24$
total sales = 9*8 = 72$

Now, we will substitute in the above equation:
gross profit margin = 24/72 = 1/3 = 0.3333334
% = 0.33333334*100 = 33.3334%</span>
5 0
3 years ago
Other questions:
  • Mrs.cha has $90 dollars. she spends 1/3 of the money on monday. she spends the remaining money equally over the next 3 days. How
    12·2 answers
  • Solve the equation below. W<br> 5x - 18 = 2(3x - 12) + 4<br> Step by step please
    12·2 answers
  • -x+7y=5,-4x+y=-7 <br> System of equations substitution
    9·1 answer
  • Need help fast! need the value of x and please show the work!
    11·1 answer
  • What is the probability that the family has two dogs and two cats​
    12·2 answers
  • 5x-6y=-4 <br> -6x+6y=-6 <br> solve using elimination <br> HELP.
    15·1 answer
  • Can u guys pls help me on this question and pls explain how u got the answer
    15·1 answer
  • What is this question?​
    8·1 answer
  • Enter the common ratio for the geometric sequence below. 4,6,9,...
    14·1 answer
  • 5. If I multiply a number by 3 and then subtract 4, the result is the same as twice the number. Find this number. ​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!