Cos(2x) = cos^2(x) - sin^2(x) - cos(x)
but sin^2(x) = 1 - cos^2(x)
cos(2x) - cos(x) = cos^2(x) - (1 - cos^2(x) ) - cos(x)
cos(2x) - cos(x) = cos^2(x) - 1 + cos^2(x) - cos(x)
cos(2x) - cos(x) = 2cos^2(x) - 1 - cos(x)
cos(2x) - cos(x) = (2cos(x) + 1)(cos(x) - 1)
I think this is what you have asked for.
Step-by-step explanation:
It is 64*0.32=20.48 minutes or 20.5 minutes.
Answer:
Temperature is a measure of the average kinetic energy of the particles in an object.
Step-by-step explanation:
which means its b
Answer:
1=2/3 reduced or 4/6 full
2=8/3
Step-by-step explanation:
The length of TY is 2.26.
Solution:
In ΔTRY, θ = 37°, Adjacent side = 3.
To find the length of TY.
Using trigonometry identity,





TY = 2.26
Hence the length of TY is 2.26.