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
What is equivalent to 8c+6-3c-2
IgorC [24]
8c + 6-3c -2

8c -3c + 6-2 = 5c + 4

Brainliest please!
8 0
3 years ago
Read 2 more answers
Do you think inequalities or equations are used more in everyday life? Justify your answer. In your answer include literal equat
nevsk [136]
Yes, I do think that inequalities or equations are used more in everyday life.
5 0
3 years ago
If the Nutrition Facts panel on a food label indicates that a food has 24 g of total carbohydrates, 2 g of fiber and 12 g of sug
Ann [662]

Answer:

Option a is correct.

Step-by-step explanation:

Since both fiber and sugar are types of carbohydrates and it is given that a portion of food has 24 gm of total carbohydrate and within which 2 gm of fiber and 12 gm of sugar.

Therefore, this food contains 2 g of fiber, 12 g of sugars, and 10 g of other unnamed carbohydrates, for a total of 24 g.  

Hence, option (a) is correct. (Answer)

5 0
3 years ago
Taylor tried to solve an equation step by step:
Leya [2.2K]
His mistake was on step 1
3 0
3 years ago
Read 2 more answers
The table below shows the number of students in th
Sphinxa [80]
The answer is c 8 in each row
6 0
3 years ago
Other questions:
  • What are sums of two integers with different signs that equal -6
    6·1 answer
  • An equilateral triangle and a square have the same perimeter. One side of the triangle measures 28 units. What is the area of th
    6·1 answer
  • If u(x) = x5 – x4 + x2 and v(x) = –x2, which expression is equivalent to (U/V) (x)?
    13·2 answers
  • HELP ASAP PLS I NEED HELP
    15·1 answer
  • At a local bakery, it costs $5 for 1/4 of a pie. What is the cost of a whole pie?​
    8·2 answers
  • For Exercises 35–48, identify p, q, and r if necessary. Then translate each argument to symbols and use a truth table to decide
    11·1 answer
  • HELP ME PLEASEEEEEEEEEEEEEEEEE
    14·1 answer
  • Write the equation of a line perpendicular to the line: y=−5/2x+4 that goes through the point (-6, 0).
    5·1 answer
  • Yolanda is buying supplies for school. She buys n packages of pencils at $1.40 per package and m pads of paper at $1.20 each. Wh
    12·1 answer
  • I WILL GIVE 20 POINTS TO THOSE WHO ANSWER THIS QUESTION RIGHT NOOOO SCAMS AND EXPLAIN WHY THAT IS THE ANSWER
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!