Register
If sin2A=24/25 and sinA=4/5 then find the value of cosA​
93.2k views
4 votes
If sin2A=24/25 and sinA=4/5 then find the value of cosA​

User Patrick Mlr
by
6.5k points

1 Answer

5 votes

Answer:

cosA = 3/5

Step-by-step explanation:

sin2A = 2sinAcosA

Plug in our values:

24/25 = 2 * 4/5 * cosA

24/25 = 8/5 * cosA

cosA = 3/5

User Olajumoke
by
6.4k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

6.5m questions

8.7m answers

Other Questions

In a double-blind experiment, the researcher does not know which a. variable is the independent variable b. subjects are in the control group c. hypothesis is being tested d. research design is being used.
Why did the plane crash? Any answers welcome.
Consider the polar curve defined by the function r(theta=theta cos(theta where 0 is less than or equal to theta and theta is less than or equal to 3pi/2
Help please!! this is for psychology sorry it's blurry
After being deployed and arrived on scene at an incident the first task for response personnel is to
Link Copied!