1answer.
Меню
Ask question
Login
Signup
Ask question
Menu
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
alexira
[117]
2 years ago
10
In a right triangle ABC, tan(a)= 20/21.find sin(a) and cos(a)
Geography
Answer
Comment
Send
1
answer:
asambeis
[7]
2 years ago
4
0
Sin(a)=opposite/hypotenuse
∴hypotenuse=√20²+21²
=√400+441
=√841
=29
∴sin(a)=20/29
=0.6897
cos(a)=adjascent/hypotenuse
=21/29
=0.7241
Send
You might be interested in
Rob wants to live in a place that has four distinct seasons and experiences a wide array of temperatures. He would most likely b
Triss [41]
Answer:
a
Explanation:
7
0
2 years ago
Read 2 more answers
Chapter 20 earth science true and false the world's oceans contain more than 97% of the earths mass
Alexeev081 [22]
Answer:
The world's oceans contain more than 97 percent of the earth's mass. F.
Explanation:
6
0
2 years ago
About what percentage of the Indian population lives in the lower and middle Ganges river basin?
sashaice [31]
D. 40%
Roughly around 40%
7
0
2 years ago
12. Do you agree or disagree that the correlation between carbon dioxide levels in the
irina1246 [14]
Answer:
Yes
Explanation:
6
0
2 years ago
The photo above shows a landform surrounded by water on 3 sides we can discrie this landform as an
d1i1m1o1n [39]
Peninsula is what it's called
8
0
2 years ago
Other questions:
What value of a makes f(x)=x^2 +a/x have a local minimum at x=2
13
·
1 answer
40) Which one of the following statements is believed to be true of comets? A) They have highly elliptical orbits around the Sun
13
·
1 answer
suppose mars turned out to be smaller about the size of the moon. how would this have affected the number of geological features
12
·
1 answer
If you see a very tall, rock feature that looks like a jagged, rectangular block sticking out of the ground, you're probably obs
14
·
1 answer
The lowering of the water table that occurs when water is pumped from a well is called _____.
11
·
2 answers
What are the pros and cons of population growth ?
9
·
2 answers
How would a pro-natalist policy most likely to impact a country?
8
·
2 answers
Which of the following land forms is created by a constructive force?
10
·
1 answer
The air on the East Coast of the United States feels very different from the air on the West Coast. The West Coast borders the P
11
·
1 answer
Why scientists think<br> the hoodoos will disappear someday.
5
·
1 answer
×
Add answer
Send
×
Login
E-mail
Password
Remember me
Login
Not registered?
Fast signup
×
Signup
Your nickname
E-mail
Password
Signup
close
Login
Signup
Ask question!