Skip to content
free
K
1
2
practice
Home
Math
English
Science
Social Studies
Contact
Language
English
Español
Sign In
/
Math
/
Trigonometry
/
Recognize domain restrictions that affect identity use
Worksheet
Grade Level
Trigonometry
TRIG.88 Recognize domain restrictions that affect identity use
0%
Skill Level
🔴 Hard
00:00
Progress to Next Level
25% to Medium
Easy
Medium
Hard
Mastery
100%
Which transformation is NOT valid without adding a restriction beyond the original domain?
A
Replacing √(cos²(x)) with cos(x)
B
Replacing tan(x) with sin(x) ⁄ cos(x)
C
Replacing 1 − sin²(x) with cos²(x)
D
Replacing sec(x)tan(x) with (sin(x)) ⁄ (cos²(x))
Submit Answer
