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Contact [7]
3 years ago
14

For this triangle...?

Physics
2 answers:
ladessa [460]3 years ago
8 0
<h2>Answer:</h2>

<u>The right choice is</u><u> (A) 0.60</u>

<h2>Explanation:</h2>

As we know

Cosθ = base / hypotenuse

We dont have base so we can find it by Pythagorean Theorem

Hypotenuse²  = Base² + height ²

Arranging for Base we get

Base² = 15² - 12²

Base² = 81  

Taking square root on both sides

Base = √81 = 9

Now put this in the formula of cosФ

Cosθ = base / hypotenuse

cos θ = 9/15

θ = cos⁻¹ (9/5)

which is 0.06

Mariulka [41]3 years ago
5 0
<h3><u>Answer</u>;</h3>

= 0.6

<h3><u>Explanation</u>;</h3>

Using Pythagoras theorrem

Base² + height ² = Hypotenuse²

Thus;

Base² = 15² - 12²

          = 81

Base = √81 = 9

But; cosine = adjacent/hypotenuse

Hence; cos θ = 9/15

                      <u>= 0.6 </u>

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makkiz [27]
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zubka84 [21]
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7 0
3 years ago
Students in a chemistry class added 5g of zinc (Zn) to 50g of hydrochloric acid (HCl). A chemical reaction occurred that produce
PilotLPTM [1.2K]

Answer:

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Explanation:

Zn + 2HCl  -> ZnCl2 + H2

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storchak [24]

Answer:

a) V1 = 4V - V2/3 and V2 = 4V -  3V1

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b) Change in entropy,Δe = 4000V1 - 1000V2

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Answer:less

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