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svetlana [45]
2 years ago
11

Can someone please help me and write out the answer​

Mathematics
2 answers:
stealth61 [152]2 years ago
7 0

Answer:

cos 60° = 1/2

SohCahToa

  • Sin = opposite/hypotenuse
  • Cos = adjacent/hypotenuse
  • Tan = opposite/adjacent

sin 60° = opposite / hypotenuse

sin 60° = √3 / 2

The bottom side = √3, the hypotenuse = 2

To find the right side's value, you use Pythagorean's Theorem

  1. a² + b² = c²
  2. a² + (√3)² = 2²
  3. a² + 3 = 4
  4. a² = 4 - 3
  5. a² = 1
  6. a = 1

cos 60° = adjacent/hypotenuse

cos 60° = 1 / 2

Oksi-84 [34.3K]2 years ago
3 0

Answer:

sin 60 = √3/2

means perpendicular (p)= √3

and

base (h)=2

find base(b)

using pythagoras theorem

h²=p²+b²

than base (b) will be 1

now

cos 60 =b/h

=1/2

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<h2>Greetings!</h2>

Answer:

B and E

Step-by-step explanation:

The rules of indicies states:

x^{a} ÷x^{b} = x^{a-b}

So 3^{-8} ÷  3^{-4} =  3^{-8 - - 4} =  3^{-4}

So that means B is one of the correct answers.

To find the other correct value, you can divide the two fractions as stated in the question:

3^{-8} by 3^{-4} = \frac{1}{81}

81 is equivalent to 3⁴

So that means E is also correct.


<h2>Hope this helps!</h2>
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3 years ago
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Answer:

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Step-by-step explanation:

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2/4 plus 4/1<br><br>Thank You
SpyIntel [72]

Answer:

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Answer:

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