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
marissa [1.9K]
3 years ago
5

Considere um triângulo retângulo, cujos ângulos agudos a e b satisfazem à condição cos a = 0,8 e cos b = 0,6 Determine a área de

sse triângulo, em cm² sabendo que o comprimento da hipotenusa é 5 cm.
Mathematics
1 answer:
Anni [7]3 years ago
7 0

Answer:

7.5 cm^2

Step-by-step explanation:

Aqui, temos Cos A = 0,8 = 8/10 = 4/5.

Cos B = 0,6 = 6/10 = 3/5.

O que isto significa é que os dois outros lados do triângulo retângulo são 3 cm e 5 cm, respectivamente.

Isso ocorre porque, o oposto do ângulo agudo A é adjacente ao ângulo agudo B e vice-versa.

Portanto, a partir dos valores de ambos, podemos obter os dois outros lados.

Matematicamente, a área da direita é 1/2 * b * h b e h são 3 e 5, respectivamente.

Assim, área = 1/2 * 3 * 5 = 7,5 cm ^ 2

You might be interested in
Can someone please help me with this question? I don't know how? What is the volume of a rectangular prism with a length of 2x –
lesantik [10]
Volume is legnth times widht times height
lenght=2x-1
width=x-2
height=x+1
multiply all together
use mass distributive property
distributive=a(b+c)=ab+ac so extending that
(a+c)(c+c)=(a+b)(c)+(a+b)(d) then keep distributing so
(2x-1)(x-2)(x+1)
do each one seperately
do the first two first and put the other one (x+1) to the side for later
(2x-1)(x-2)=(2x-1)(x)+(2x-1)(-2)=(2x^2-x)+(-4x+2)=2x^2-5x+2
then do the other one
(x+1)(2x^2-5x+2)=(x)(2x^2-5x+2)+(1)(2x^2-5x+2)=(2x^3-5x^2+2x)+(2x^2-5x+2)=2x^3-3x^2-3x+2

the lasst form is 2x^3-3x^2-3x+2





3 0
3 years ago
Simplify (-8z+4) + (7z-7)
Karo-lina-s [1.5K]

Answer:

1. -1z-3

2. 4x+2

3. -y+11

4. 7a-22

Step-by-step explanation:

Not too sure about the last one

5 0
3 years ago
7 d^2 +10 when d = 3
user100 [1]

Answer:

d = 3/7 = 0.429

d = 1

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
How to do question 13?
grin007 [14]
You answer on question 13 is 350
6 0
3 years ago
Read 2 more answers
Help me please thank you :)
Radda [10]
I have no idea but good luck
4 0
3 years ago
Other questions:
  • Kendra has $6.00 in dimes and quarters. If she has 2 times as many quarters as dimes, how many of each coin does she have?
    5·2 answers
  • Please help me!!!!!!!!
    6·2 answers
  • What is the sign of a• (-b/b) when a=0 and b < 0
    6·1 answer
  • Jason thinks he needs 25 boxs to pack 144 cups is Jason correct explain
    15·2 answers
  • Derivative of this function<br> <br>Y= -7X³ -8X² +6X +3
    9·1 answer
  • 23 students were given green pencils to write with and 16 students got yellow. 46 student got black pens how many fewer students
    9·1 answer
  • What numbers multiply to -24 but add up to -2
    14·1 answer
  • 25 points each!!!!!!!!!!!!!!<br><br> Hint: It isn't D
    9·1 answer
  • If the heights of 99.7% of American men are between 5' 0" and 7' 0", what is your estimate of the standard deviation of the heig
    10·1 answer
  • you notice a hot air balloon descending. The elevation h (in feet) of the balloon is modeled by the function h(x)=-12x+300, wher
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!