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Alex777 [14]
3 years ago
9

Prove that sec(-pi/4) = sqrt2.

Mathematics
1 answer:
Alika [10]3 years ago
3 0
Sec ( -π/4 ) =
 =1 / cos( -π/4 ) =
= 1 / cos (π/4 ) =
= 1  / √2/2 = 2/√2 = √2
( correct )
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Please Help and Thanks.
Katena32 [7]

Answer:

Step-by-step explanation:

case 1

cost of 20oz bottle of soda = $1.20

dividing both side by 20

cost of 20/20 oz bottle of soda = $1.20/20

cost of 1oz bottle of soda = $0.06

__________________________________________

Case 2

cost of 12oz bottle of soda = $0.85

dividing both side by 12

cost of 20/20 oz bottle of soda = $0.85/12

cost of 1oz bottle of soda = $0.07

Based on above calculation, we can see that first deal 20oz bottle of soda at costs $1.20 is better deal as per unit cost is $0.06 which is less than 12 oz can of soda costs $0.85 which is equivalent to  $0.07 per unit cost

7 0
2 years ago
Marcelo can select from 2 types of oranges and 3 types of peaches. If he randomly selects 1 orange and 1 peach, how many possibl
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6

2x3=6

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8 0
3 years ago
What does a straight line on a distance time graph mean
klasskru [66]
It means the speed (velocity) was constant - the object traveled the same distance per time period throughout the graph.
7 0
3 years ago
-100 - ___= 65<br> A. 35<br> B. 65<br> C. -35<br> D. -165
Softa [21]

Answer:

D

Step-by-step explanation:

If you subtract -165 from -100 you will get 65.

4 0
3 years ago
The length of the box is x
Romashka [77]

A polynomial that represents the volume of the Amazon box is; V(x) = x³ - 6x² + 5x

<h3>How to calculate the volume of a box</h3>
  • Length of box = x
  • Width of the box is 4 inches less than the length. Thus; width = x - 4
  • Height is said to be 1 inch less than the width. Thus; height = x - 4 - 1 = x - 5

Now, the formula for volume of a box is;

V = length × width × height

Thus;

V = x • (x - 1) • (x - 5)

V = x(x² - x - 5x + 5)

V = x(x² - 6x + 5)

V(x) = x³ - 6x² + 5x

In conclusion, the polynomial that represents the volume of the Amazon box is V(x) = x³ - 6x² + 5x

Read more on volume of a box at; brainly.com/question/15532376

3 0
2 years ago
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