Evaluate cos 300' without using a calculator, 2 O A. 1 / O B. 1 о c va

Mathematics

1 answer:

storchak [24]2 years ago

7 0

Answer:

$Cos \ 300 = \dfrac{1}{2}$

Step-by-step explanation:

$\sf \boxed{Cos \ (2\pi - \theta) = Cos \ \theta}$

Cos 300 = Cos ( 360 - 60)

= Cos 60

$\sf = \dfrac{1}{2}$

You might be interested in

Pls help I will not let me add the screenshot so I'm going to try and explain. so there is a rectangle the top measures 10m and

-BARSIC- [3]

Answer:

£23

Explanation:

6x10=60
2x1.5=3
3.14x2^2=12.566
60-3-12.566=44.433
44.43/10=4.43
5 bags
5x4.60=23
=£23

3 0

3 years ago

the axis of symmetry of a quadratic equation is x = –3. if one of the zeroes of the equation is 4, what is the other zero?

FinnZ [79.3K]

ANSWER

The other zero is

$x = - 10$

EXPLANATION

The axis of symmetry serves as the midpoint of the two zeroes.

We were given that the axis of symmetry of the quadratic equation is
$x = - 3$

We were also given that, one of the zeroes of the quadratic equation is
$x = 4$

Let the other zero of the quadratic equation be
$x = p$

,then, we apply the midpoint formula to find the value of
$p$

Since it is the x-values of the intercepts that gives the solution, we use only the x-value part of the midpoint formula which is given by,

$\frac{x_1 + x_2}{2} = axis \: of \: symmetry$

We substitute to obtain,

$\frac{p + 4}{2} = - 3$

We multiply through by 2 to get,

$p + 4 = - 6$

This implies that,

$p = - 6 - 4$

$p = - 10$

3 0

3 years ago

Read 2 more answers

2m^2n^4/6m^5n^3 assume no variable equals zero.

Andrews [41]

8 0

3 years ago

2x + y - z = 3<br> -x + 2y + 4z = -3<br> x – 2y - 3z = 4

mario62 [17]

Answer:

x=3, y=-2, z=1

Step-by-step explanation: