Answer: After 6 hour for the first question
Step-by-step explanation: Cause ∣x+
1−x
2
∣=
2
(2x
2
−1)\Leftright∣cos\alp+sin\alp∣=
2
(2cos
2
\alp−1)
∣
N
2
c
o
s
(
\alp
−
π
4
)
∣
=
N
2
c
o
s
(
2
\alp
)
\Right
\alp
∈
[
0
;
π
4
]
∪
[
3
π
4
;
π
]
∣N
2
cos(\alp−
4
π
)∣=N
2
cos(2\alp)\Right\alp∈[0;
4
π
]∪[
4
3π
;π]
1)
\alp
∈
[
0
;
π
4
]
\alp∈[0;
4
π
]
c
o
s
(
\alp
−
π
4
)
=
c
o
s
(
2
\alp
)
…
cos(\alp−
4
π
)=cos(2\alp)…
2.
\alp
∈
[
3
π
4
;
π
]
\alp∈[
4
3π
;π]
−
c
o
s
(
\alp
−
π
4
)
=
c
o
s
(
2
\alp
)
…
−cos(\alp−
4
π
)=cos(2\alp)…
Answer:I think 57Step-by-step explanation:
Cuz its adding 2 every time then I just did 28 x 2 and added the extra. Does that make sense?
4 x 8 = 28
28 x 2 = 56
56 + 1 = 57
Answer: the degree will go down 90 degrees
Step-by-step explanation: An obtuse triangle is one that has an angle greater than 90°. An acute triangle is defined as a triangle in which all of the angles are less than 90°.
I know this isn’t a answer or a step by step explanation but can someone please help and explained this it’s so confusing and hard
