Deriving the Triangle Area Formula
Precalculus · Flashcards
PRECALCULUS · FLASHCARDS
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QUESTION
Find
tan
(
θ
)
\tan(\theta)
tan
(
θ
)
if opposite
=
9
=9
=
9
and adjacent
=
12
=12
=
12
.
QUESTION
What is the complementary-angle relationship between sine and cosine in a right triangle?
QUESTION
A ramp rises 3 m over a 4 m run. What is the ramp length (hypotenuse)?
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ANSWER
5
m
5\text{ m}
5
m
. Use Pythagorean theorem: length
=
3
2
+
4
2
=
25
=
5
= \sqrt{3^2+4^2} = \sqrt{25} = 5
=
3
2
+
4
2
=
25
=
5
m.
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