Answer:
Step-by-step explanation:
a) Given cos2theta=28/53 and 0degrees< theta < 90degrees
From cos2theta=28/53
b) Given
If cos theta 0, this means we need to look for the quadrant where sin is negative and cos is positive. That will be the fourth quadrant. In the fourth quadrant, theta = 360 - 31.95° = 328.05°
2theta = 2 * 328.05
2theta = 656.1°
c) Given tan x=2 and cos x<0, lets find the angle of x first.
If tan x = 2
x = tan^-1 2
x = 63.4°
Sine cos is less than 0, then we need to find the angle of x where tan is positive and cos is negative. That will be the third quadrant. In the third quadrant, ew value of x = 180+63.4
x = 243.4°
Since we are to find 2x,
2x = 2(243.4)
2x = 486.8°
X≈2.48207399,<span>−<span>2.14874066</span></span>
Answer:
The first 3 terms are -3, -2, -1
Step-by-step explanation:
n-4
First term: 1 - 4 = -3
Second term: 2 - 4 = -2
Third term: 3 - 4 = -1
<span>2x^2 + 4x - 7
The given polynomial has 3 terms. They are
4x, 2x^2, and -7
The 4x term is of degree 1 with respect to x.
The 2x^2 is of degree 2 with respect to x.
and finally, the -7 term is of degree 0 with respect to x.
So sort the terms in descending order by degree and you get
2x^2 + 4x - 7
Also, don't worry that changing the order of the terms might change the value of the polynomial, that won't happen due to the commutative property of addition.</span>
Triangle ABC has vertices at A(3, 8) , B(11, 8) , and C(9, 12) . Triangle FGH has vertices at F(1, 3) , G(9, 3) , and H(7, 7) .
Alex17521 [72]
Hmm, (x,y)
x is horizontal or left right
y is vertical or up down
so
we see that A to F is move left 2 and down 5
B to G is left 2 and down 5
C to H is left 2 and down 5
so translatete ABC left 2 and down 5 and
translate FGH right 2 and up 5
not 1st option
2nd works
3rd works
4th is false
2nd and 3rd