Answer:
3 hours
Step-by-step explanation:
135/45=3
The answer shall be known as n=11
(☞ﾟヮﾟ)☞n = 11☜(ﾟヮﾟ☜)
<span>10x - 3(2x + 5)
= </span><span>10x - 6x - 15
= 4x - 15
answer
</span><span>a) 4x - 15</span>
Answer:
b100+61=t
Step-by-step explanation:
wait what is it asking for?
what do the
1=
2=
3=
mean?
i'm so sorry if i interpreted this wrong
Answer:
2
Step-by-step explanation:
For some angle "a", the sine and cosine are related by ...
sin(a) = cos(π/2 -a)
That is,
sin(7π/16) = cos(π/16)
sin(5π/16) = cos(3π/16)
__
Then your sum becomes ...
sum = sin(π/16)² +sin(3π/16)² +cos(3π/16)² +cos(π/16)²
If we let α = π/16 and β = 3π/16, this can be written as ...
sum = (sin(α)² +cos(α)²) +(sin(β)² +cos(β)²)
sum = 1 + 1
sum = 2
__
The identity sin(α)² +cos(α)² = 1 is sometimes called the Pythagorean identity.
