I can’t seen the question so it is hard to answer
Answer:
The most straightforward way to obtain the expression for cos(2x) is by using the "cosine of the sum" formula: cos(x + y) = cosx*cosy - sinx*siny. cos(2x) = cos² (x) - (1 - cos²(x)) = 2cos²(x) - 1. = 2cos²(x) - 1.
Step-by-step explanation:
The measure of the interior angles would be 120°, and they would all add up to be 720°
Answer:
The Answer is C. false; m =-2 or m=2
Step-by-step explanation:
This is because:
2*2=4 being 4+6=10 Making 2 true, but
-2*-2= 4 as well making it 4+6=10, Making -2 true as well.
The answer is 2,700
This is because
60
x45
------------
300
+2400
--------------
Or Use Partial Products
60. 0. 1.0x40
___________. 2.60x40
I2400 I. 30. I.
40I. I. I. 3.0x40
|---------I----------I. 4.0x5
5I. 0. I. 0. I
l____ I______I
I hope this helped because this was a lot and I mean a lot of work