Register
(If cosA/2=1/2. find the value of sinA.)​
183k views
4 votes
(If cosA/2=1/2. find the value of sinA.)​

User Matt Privman
by
7.5k points

1 Answer

9 votes


\\ \rm\hookrightarrow cosA/2=1/2


\\ \rm\hookrightarrow 2cosA=2


\\ \rm\hookrightarrow cosA=1

Now


\\ \rm\hookrightarrow sinA=√(1-cos^2A)


\\ \rm\hookrightarrow sinA=√(1-1^2)


\\ \rm\hookrightarrow sinA=0

Here

  • A=0°
User Sheinbergon
by
8.7k points
← Prev Question Next Question →

Related questions

User Mranz
asked Jun 12, 2024 182k views
F) If cosa + sinß = a and sina + cosß = b. prove that: sin(a + B) = (a²+ b² - 2).​
Mranz asked Jun 12, 2024
by Mranz
8.0k points
1 answer
3 votes
182k views
User Foday
asked Mar 5, 2024 55.1k views
If cosA/tanA×sinA = 16 then prove that: sec A = ± square root 17/4​
Foday asked Mar 5, 2024
by Foday
8.3k points
1 answer
3 votes
55.1k views
User Sampathpremarathna
asked Jun 8, 2024 187k views
4. For the following triangle, find sinA, cosA, tanA, sinB, cosB and tanB:
Sampathpremarathna asked Jun 8, 2024
by Sampathpremarathna
8.3k points
1 answer
5 votes
187k views
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.5m questions

12.2m answers

Other Questions

How do you can you solve this problem 37 + y = 87; y =
What is .725 as a fraction
How do you estimate of 4 5/8 X 1/3
i have a field 60m long and 110 wide going to be paved i ordered 660000000cm cubed of cement  how thick must the cement be to cover field
Write words to match the expression. 24- ( 6+3)
Link Copied!