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
Lerok [7]
2 years ago
6

If a is an obtuse angle in a triangle and sin a = , calculate the exact value of sin 2a.

Mathematics
1 answer:
garik1379 [7]2 years ago
8 0

Answer:

Step-by-step explanation:

cos A = √( 1 - (5/13)²) = √( 1 - 25/169) = √(144/169) = - 12 /13

in 2 A = 2 sin A cos A

sin 2 A = 2 *5/13 ( - 12/13 ) = - 120 / 169

the answer is -120/169

You might be interested in
The file below <br><br> click on it
irina1246 [14]

The value of a is 70° and b is 20°

8 0
3 years ago
Read 2 more answers
6p - 18 = pr + t . Solve fort
Svetach [21]

Answer:

T= 4p-18-pr

Step-by-step explanation:

8 0
3 years ago
A paint store mixed 4 3/4 cans of paint and 7 2/3 cans of white paint did this mixture make?
stira [4]

Answer:

12 5/12 cans of white make

Step-by-step explanation:

6 0
3 years ago
9, 14, 7, 9, 3, 12, 5,4
Rus_ich [418]

Answer:

mean: 65

median: 9

Step-by-step explanation:

You take all the numbers you have and add them up. Make it simple by adding smaller numbers together. Then once you have the total which is 65 you divide it by the total of numbers you have and then round because after dividing you get 8.125 and the safest way to round is to 9.

5 0
3 years ago
DOES ANYONE KNOW HOW TO DO THESE???
MA_775_DIABLO [31]

Answer:

Step-by-step explanation:

7. The horizontal translation is 3 units to the right, this is determined by the value that is being added or subtracted to x directly. In this case, x is being subtracted by 3 meaning that it is translated 3 units to the right.

8. It is being translated 2 units up. This is determined by the number that is added to the quadratic equation. In this case, it is increased by 2 which means an upward translation. If it was being subtracted it would be a downward translation.

9. Yes, when a quadratic equation has a negative sign outside of it which changes its values it means that it is being reflected.

6 0
3 years ago
Other questions:
  • 5. Sophia purchases a cell phone for $25. This amount includes a tax of 6%. What was the cost of the item before tax?
    15·2 answers
  • What does 18 tens and 20 ones equal
    11·2 answers
  • Calculate the volume of the rectangular prism.
    10·2 answers
  • I need help please!!
    12·1 answer
  • The number of subscribers to a streaming video service doubles each week.
    14·2 answers
  • Choose the function to match the graph???
    15·1 answer
  • I need help ASAP!! Please explain how to do solve the problem.
    12·1 answer
  • Samuel orders four DVDs from an online music store. Each DVD costs $9.12. He has a 25% discount code, and sales tax is 6.5%. Rou
    7·1 answer
  • I. THE SET OF POINTS ON A PLANE THAT ARE THE SAME DISTANCE FROM A CENTER POINT.
    11·1 answer
  • HELP!!
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!