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OLEGan [10]
3 years ago
5

GEOMETRY!!! 15 PTSSSSS

Mathematics
2 answers:
ss7ja [257]3 years ago
4 0

Answer:

23) option c

    JL ≈ 9.3

25) option c

      y ≈ 9.6

Step-by-step explanation:

<h3>25)</h3>

Given in the question that,

cos(21°) = 9 / y

y = 9/cos(21°)

y = 9.64

y ≈ 9.6(nearest tenth)

<h3>23)</h3>

Given in the question that the hypotenuse of right angle triangle = 12

To find,

height of the right angle triangle

angle k = 39°

so by using trigonometry identity

cos(39) = opp/hypo

cos(39) = JL / KL

JL = cos(39)(12)

JL = 9.32

JL ≈ 9.3

<h3 />
lapo4ka [179]3 years ago
4 0

Answer:

Q 23.  Last option 7.6

Q 25 Third option

Step-by-step explanation:

<u>To solve Q 23</u>

From the figure we can write,

Sin 39 = Opposite side/Adjacent side

 = JL/KL

 = JL/12

JL= 12 * Sin 39

 = 12 * 0.629  = 7.55

 = 7.6

<u>To solve Q 25</u>

Cos 21 = 9/y

y = 9/Cos 21 = 9/0.9335

= 9.64

 = 9.6

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