2 answers:
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 />
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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