Answer:
20:60 12:36 2:6
Step-by-step explanation:
The second number is going to be 3 times as big as the first ine
Answer:
You will have to find out if JK ≅ MN
Step-by-step explanation:
SAS means you have 2 sides that are congruent that connect to make the one angle congruent.
Due to the fact that JL ≅ MR the sides that are left to make up the angles ∠J and ∠M
Answer:
Only the second equation is an identity
Step-by-step explanation:
<u>Note that </u>
<u>You can confirm it: </u>
<u>Therefore</u>
<h2>
It is not an Identity</h2>
<u>Let's the second one</u>
In this case, we already performed the calculations, so it is true. It is an Identity.
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.
