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
Kitty [74]
3 years ago
7

in right triangles ABC, angle A and B are complementary angles. the value of cos a is 5/13 is the value of sin B

Mathematics
2 answers:
blagie [28]3 years ago
5 0
We know that
<span>In a right triangle
if A and B are complementary angles
cos A=sin B
therefore
if cos A=5/13
then sin B=5/13

the answer is
sin B=5/13</span>
Drupady [299]3 years ago
4 0

Answer:

The value of sin B is 5/13.

Step-by-step explanation:

In , Right triangles ABC:

∠A + ∠B = 90° (complimentary angles)

∠C = ?

In ΔABC:

∠A + ∠B + ∠C = 180° (angle sum property)

90° + ∠C = 180°

∠C= 180° - 90° = 90°

So, in right triangles ABC, angle 90° is at C.

According to trigonometric ratios:

\cos \theta =\frac{base}{hypotenuse}

In right triangle ABC with base AC:

\cos A=\frac{5}{13}=\frac{AC}{AB}

AC = 5. AB = 13

In right triangle ABC with base BC, then perpendicular becomes AC and hypotenuse is AB.

According to trigonometric ratios:

\sin\theta =\frac{perpendicular}{hypotenuse}

\Sin B=\frac{5}{13}

The value of sin B is 5/13.

You might be interested in
Solve for x<br> C. 120<br> 2x<br> 3x<br> D. (2x+6)<br> X<br> 126
brilliants [131]

Answer:

x=32

Step-by-step explanation:

i took the test

4 0
2 years ago
Please help!!!!!!!!
Arisa [49]

It should be C., is that what the graph looks like?

6 0
3 years ago
Please help me please i really need help
Debora [2.8K]

Answer:

D

Step-by-step explanation:

multiple by

2*5= 10......

4 0
3 years ago
Read 2 more answers
I am working on a test review. How can I write -1 &lt;= 2x+7 &lt;21 as two inequality statements? How do I join them with and/or
Tanya [424]

Answer:

( - 1 > 2x + 7)(2x + 7 < 21)

Not sure about the and/or statement

6 0
3 years ago
PLEASE HELP!!!!!!!!
Flura [38]

the answer is A ,when x=0,g(x)is-1,so when u add x into the g(x),which is  given below,u can find C,D,E,g(x) is no equal to -1,when you add x=1 into g(x)(A,B),you can find g(x) of B is 0,which is no equal the answer giving above(g(x)=2),but A is all right.

5 0
3 years ago
Other questions:
  • Check me please ( brainlyest answer )
    10·2 answers
  • Use the ratio table below to determine who the faster swimmer is
    12·2 answers
  • Calculate the values of the Expressions below 3 * 8 divided by 2 squared + 1​
    9·1 answer
  • PLEASE HELP ME!!! Please?
    13·1 answer
  • The rate of change for a quadratic function is
    6·1 answer
  • Write an algebraic rule to describe the relationship in the table.
    7·1 answer
  • Help I need help plis ​
    15·2 answers
  • ·       CSD, ETF, GUH, ____, KWL pattern​
    14·1 answer
  • Which of the following is an example of overdraft protection?
    13·2 answers
  • Find the difference of 7 2/3 and 6 3/7
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!