Tan⁴x - sec⁴x = 1 - 2sec²x
tan²x = sec²x - 1
tan⁴x - sec⁴x = 1 - 2sec²x
(tan²x)² - sec⁴x = 1 - 2sec²x
(sec²x - 1)² - sec⁴x = 1 - 2sec²x
(sec²x)² - 2 * sec²x + 1 - sec⁴x = 1 - 2sec²x
sec⁴x - 2 sec²x + 1 - sec⁴x = 1 - 2sec²x
sec⁴x can be cancelled:
- 2 sec²x + 1 = 1 - 2sec²x
1 - 2sec²x = 1 - 2sec²x
<h3>Steps:</h3>

---------------------------

<em>This is the answer you just have to follow the integer rule and combine like variables that all!</em>
<u>please inform me if its wrong</u>
if this was helpful mark brainliest
Answer:
C
It's between C and D.
But when you closely look at the two answer choices, it is C.
Step-by-step explanation:
In D, the angle AC∠ is too small and it can be automatically crossed out. As well as A and B.
Hope this helped!
Step-by-step explanation:
3 of the 4 options aren't prisms
A is a cuboid
B is a cube
C is a prism
D is a pyramid
The answer is <a is congruent to < d
because you already have <abe = <dbe