When we use arcsine, we are finding the angle while giving the trigonometric ratio.
Arcsin(u) = theta can be rewritten as:
sin(theta) = u
Sine is opposite over hypotenuse, so u/1 means that the side opposite to theta (the y value) is u, and the hypotenuse is 1.
We can use Pythagorean Theorem to find the adjacent (x value).
1^2 - u^2 = x^2
x = sqrt(1-u^2)
Back to the original question, we are trying to find cos(arcsin(u)). We just solved all the sides for our triangle using arcsin(u). Now we need to do cos(u).
Cosine is adjacent over hypotenuse.
So our answer is sqrt(1-u^2)/1
Or just sqrt(1-u^2)
Answer:
131˙
Step-by-step explanation:
Supplementary angles are angles that add up to 180˙. If you subtract 49 from 180, you get 131.
Brainliest? Maybe?
Answer:
i think 64 for your answer
Step-by-step explanation:
√19 belongs to a set of irrational number
<h3>Irrational numbers</h3>
Numbers are irrational if they cannot be written as ratios or fractions of two numbers.
Examples of irrational numbers are √2, √3, √5, √11, √21, π, etc.
Since 19 is a prime number that can only be factored by 1 and itself, it is pairless and not in a power of 2.
Therefore, √19 belongs to the set of irrational numbers.
Learn more on irrational numbers here: brainly.com/question/20400557
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