2 years ago

What is sec (-780 degrees)

Mathematics

1 answer:

zaharov [31]2 years ago

8 0

Answer:

its 2

Step-by-step explanation:

sec=1/cos

sec -720 + sec -60

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ivolga24 [154]

Answer:

4+2×6×6(x=6)

4+72

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2 years ago

Can you please help me with the questions I will give you brainliest.

KiRa [710]

Answer:

C the First page

Step-by-step explanation:

1) you input the 2 into the T So the equation would look like this

15+2.5*(times) 2

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3 years ago

Select all that apply.

ioda

Answer:

multiply 6:8 by 2

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2 years ago

How do you find DE, Round to nearest 10th

Sergeu [11.5K]

Answer: $DE\approx6.0$

Step-by-step explanation:

Observe in the figure given in the exercise that four right triangles are formed.

In this case you can use the following Trigonometric Identity to solve this exercise:

$cos\alpha=\frac{adjacent}{hypotenuse}$

From the figure you can identify that:

$\alpha =53\°\\\\hypotenuse=10\\\\adjacent=BE=DE$

Then, you can substitute values:

$cos(53\°)=\frac{DE}{10}$

The next step is to solve for DE in order to find its value. This is:

$10*cos(53\°)=DE\\\\DE=6.01$

Finally, rounding the result to the nearest tenth, you get that this is:

$DE\approx6.0$

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3 years ago

A used car already has 40,000 miles on its odometer. The average owner will drive 12,000 miles per year.

RSB [31]

The function best models the linear relationship is y=12,000x+40,000.

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3 years ago