Multiple {5 0 3-5}×[2-1 2-2]
1 answer:
You might be interested in
Imagine a trigonometric circle with radius equal to 1.
We can say that the opposite side of the angle generated by the origin is equal to sen Ф and the adjacent equal to cos Ф
With this we can say that:
h² = c² + c²
If r = 1, then h = 1
1² = cos² + sen²
1 = cos² Ф + sen² Ф
You can use this equation a lot of times because it's the fundamental trigonometric relation
, so, when you something like:
sen Ф = cos Ф + 1
you can take from sen² Ф + cos² Ф = 1 that and then resolve.
Answer:
Step-by-step explanation:
Both terms have a in them, so we can first start by factoring that out:
For the remaining two terms in the parenthesis, they both can have a factored out: