Deriving the Triangle Area Formula
Geometry · Flashcards · Application
GEOMETRY · FLASHCARDS
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QUESTION
Find
θ
\theta
θ
if
tan
(
θ
)
=
1
\tan(\theta)=1
tan
(
θ
)
=
1
and
θ
\theta
θ
is acute.
QUESTION
Find the missing leg
b
b
b
if
c
=
13
c=13
c
=
13
and
a
=
5
a=5
a
=
5
in a right triangle.
QUESTION
Find and correct the error:
sin
(
θ
)
=
adjacent
hypotenuse
\sin(\theta)=\frac{\text{adjacent}}{\text{hypotenuse}}
sin
(
θ
)
=
hypotenuse
adjacent
.
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ANSWER
Correct:
sin
(
θ
)
=
opposite
hypotenuse
\sin(\theta)=\frac{\text{opposite}}{\text{hypotenuse}}
sin
(
θ
)
=
hypotenuse
opposite
. Sine uses opposite over hypotenuse, not adjacent.
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