Solving Trigonometric Equations in Context
Geometry · Flashcards · Recall
GEOMETRY · FLASHCARDS
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QUESTION
Identify the correct degree-to-radian conversion formula for an angle
θ
\theta
θ
.
QUESTION
What is the inverse-trig step to solve
sin
(
θ
)
=
a
\sin(\theta)=a
sin
(
θ
)
=
a
when
a
∈
[
−
1
,
1
]
a\in[-1,1]
a
∈
[
−
1
,
1
]
?
QUESTION
What is
arctan
(
tan
(
θ
)
)
\arctan(\tan(\theta))
arctan
(
tan
(
θ
))
equal to in general?
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ANSWER
The angle in
(
−
π
2
,
π
2
)
(-\frac{\pi}{2},\frac{\pi}{2})
(
−
2
π
,
2
π
)
coterminal with
θ
\theta
θ
. Returns the equivalent angle in the principal range.
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