Answer:
x = π/2 + πk
Step-by-step explanation:
cot² x csc² x + 2 csc² x − cot² x = 2
Multiply both sides by sin² x:
cot² x + 2 − cos² x = 2 sin² x
Add cos² x to both sides:
cot² x + 2 = 2 sin² x + cos² x
Pythagorean identity:
cot² x + 2 = sin² x + 1
Subtract 1 from both sides:
cot² x + 1 = sin² x
Pythagorean identity:
csc² x = sin² x
Multiply both sides by sin² x:
1 = sin⁴ x
Take the fourth root:
sin x = ±1
Solve for x:
x = π/2 + 2πk, 3π/2 + 2πk
Which simplifies to:
x = π/2 + πk
Answer:
your friends skateboard is higher
Step-by-step explanation:
If you do the problem, and need work, do this, convert 2 3/8 to a decimal as well as 2 2/5. Which ever one is bigger as a decimal is the higher one.
Answer:
b=(d-c)/a
Step-by-step explanation:
Ab + c = d
Subtract c from both sides
ab=d-c
Divide both sides by a
b=(d-c)/a
Answer:
b
=
d
-
c
a
Step-by-step explanation:
a
b
+
c
=
d
a
b
=
d
−
c
b
=
d
−
c
a