Mathematics
01.12.2020 21:47
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What is a positive coterminal angle to 403° that is between 500° and 1000° and a

What is a positive coterminal angle to 403° that is between 500° and 1000° and a negative coterminal angle to 403° that is between −500° and 0°?

what is the value of arccos(−0.32) as a decimal to the nearest hundredth of a degree?
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TravKeepIt100
TravKeepIt100
4,6(39 marks)

Positive co-terminal = 763°

Negative co-terminal = -317°

arccos(-0.32)=108.66°

Step-by-step explanation:

We are given an angle 403°

We need to find Positive co-terminal of angle 403° that is between 500° and 1000°

For positive co-terminal angle add 360°

Positive co-terminal of 403° ⇒ 403+360 ⇒ 763°

500° ≤ 763° ≤ 1000°

Therefore, 763° is positive co-terminal angle of 403° between 500° and 1000°

For negative co-terminal angle subtract 360°

Negative co-terminal of 403° ⇒ 403-360 ⇒ 43°

But 43° is not lie between -500° and 0°

So, we subtract 360° again

Negative co-terminal of 403° ⇒  43°-360° ⇒ -317°

-500° ≤ -317° ≤ 0°

Therefore, -317° is negative co-terminal of 403° between -500° and 0°

# We need to find the value of arccos(−0.32) as a decimal to the nearest hundredth of degree.

Using calculator to find the inverse of cos at -0.32

Therefore, arccos(−0.32)=108.66°

paulusl19
paulusl19
4,8(85 marks)

(x + 1) * (x + 4)

Step-by-step explanation:

y = x² + 5x + 4

First, you multiply the first coefficient by the third coefficient: 4

Then you find all the factors of 4:

1, 4-1, -42, 2-2, -2

Of all these factors, you must find the pair that adds to 5 (the second coefficient)

Those factors are:  1 and 4

Then you put those into (x+_) and multiply them together:

( x + 1 ) * ( x + 4 )

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