Formative Assessment _ Problems_Oblique Triangles | Quizalize

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Formative Assessment _ Problems_Oblique Triangles

Quiz by Hannah Jean Rico

Grade 9

Mathematics

Philippines Curriculum: Grades K-10 (MELC)

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Q 1/5
Score 0
What is the appropriate equation to solve for the third side in the given figure?
29

$c=\sqrt{15^2+18^2-2\left(15\right)\left(18\right)\cos65^o}$
$c=15\sin65^o$
$c=18\sin65^o$
$c=\sqrt{15^2+18^2+2\left(15\right)\left(18\right)\cos65^o}$

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5 questions

Show answers

Q1
What is the appropriate equation to solve for the third side in the given figure?
$c=\sqrt{15^2+18^2-2\left(15\right)\left(18\right)\cos65^o}$
$c=15\sin65^o$
$c=18\sin65^o$
$c=\sqrt{15^2+18^2+2\left(15\right)\left(18\right)\cos65^o}$
30s
Q2
How long is the third side of the given triangle?
20m
18m
19m
17m
30s
Q3
How long is the third side of a triangle if the included angle of the 18-meter and 15-meter sides is 38^o?
9m
7m
13m
11m
30s
Q4
One of the teachers in Sto. Niño National High School conducted a home visitation of a student who is no longer participating in learning activities. Having some modules at hand, he needed to drop by the school first. The distance from the teacher's house (T) to school (S) is 40 m and school (S) is 25 m away from the learner's house (L). From the figure, the angle between the segment connecting the learner's house to teacher's house and segment connecting the learner's house to the school is 50^o.
Question: How far is the teacher's house from the learner's house?
51m
50m
53m
52m
30s
Q5
Which has the shortest distance?
L and T
T and S
L and S
30s