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3241004551 [841]
2 years ago
7

Find the EXACT value of sec (-120 degrees)

Mathematics
2 answers:
Mademuasel [1]2 years ago
7 0

Well sec(-120) = 1/cos(-120).

We know that cos(-120) = -1/2.

So, 1/(-1/2) = -2.

This means that sec(-120) = -2.

kenny6666 [7]2 years ago
3 0
Sec is 1/cos so sec -120 is 1/cos -120 which is -2
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How to subtract unlike fractions
topjm [15]
Find the common denominator for both unlike fractions.

EX:   1                        2
         12                      8

The lowest common factor is both fractions is 24.           Multiply both denominators to get 24. 

Do not forget to multiply the numerators with the number you used to multiply the denominators together.        

You do not have to multiply each side by the same number.
 
5 0
3 years ago
6
Arte-miy333 [17]
The answer might be B
7 0
3 years ago
suzie spent 3 1/2 hours at the beach. she spent 45 minutes playing in the sand and the rest of the time playing in the water. ho
Anika [276]

Answer:

2 hours and 45 min

Explanation:

3 hours+30 minutes

subtract 30

3 hours

subtract 15

2 hours and 45 min

6 0
2 years ago
The URS construction company has submitted two​ bids, one to build a large hotel in London and the other to build a commercial o
topjm [15]

Answer: Our required probability is 0.55.

Step-by-step explanation:

Since we have given that

Probability that chance of winning the hotel bid = 40%

Probability that no chance of winning the hotel bid = 100-40=60%

Probability that chance of winning the office building bid = 25%

Probability that no chance of winning the office building bid = 100-25 = 75%

So, Probability that the company will win at least one contract is given by

0.4\times 0.75+0.6\times 0.25+0.4\times 0.25\\\\=0.55

Hence, our required probability is 0.55.

5 0
3 years ago
Please help! With steps included :)
Len [333]

Answer:

Top question: -7°

Bottom question : 18°

Step-by-step explanation:

Top question:

The base angles of am isosceles triangle are congruent:

x + 46 = 39 because the base angles of an isosceles triangle are congruent

x + 46° = 39°

x = -7°

Bottom question

The missing angle is 3x because the base angles are congruent

To find the value of x, we must add all the angles inside the triangle, and find the value of x that makes it equal to 180°

3x + 3x + 4x = 180°

10x = 180°

x = 18°

Sorry for the late post!

-Chetan K

8 0
2 years ago
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