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Elodia [21]
3 years ago
6

Please solve this problem ​

Mathematics
1 answer:
asambeis [7]3 years ago
8 0

Answer:

(4) 0

Step-by-step explanation:

<u>Given:</u>

  • cos²27°×cos²34°×...×cos²167 = ?

<u>Looking at the angles measures, they form series of: </u>

  • 27, 34, 41, ..., 167

This is AP with the first term of 27 and common difference of 7

<u>We can see one of the terms of this AP is 90</u>

  • 27+9*7 = 27 + 63 = 90

Since cos 90° = 0 ⇒ cos²90° = 0 and therefore given series equals to zero as one of the terms of multiplication is zero.

<u>So correct answer choice is</u>  Option 4) 0

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Which graph represents 2x − 5y ≥ − 20
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Step-by-step explanation:

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Three missiles are fired at an enemy arsenal. The probabilities the individual missile will hit the arsenal are 0.75, 0.85, and
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The probability that at least two of the missiles hit the arsenal:
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3 0
3 years ago
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5 0
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Read 2 more answers
I need to solve xy I am so confused please
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Answer:

Step-by-step explanation:

In the question it’s given that : y=|x| => even if x will be a negative number,y will be positive.

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2) -2 ; 2 ; (-2,2)

3) -1 ; 1 ; (-1,1)

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5) 1 ; 1 ; (1,1)

6) 2 ; 2 ; (2,2)

7) 3 ; 3 ; (3,3)

8 0
2 years ago
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