Is this rational or irrational I really need help ASAP! Will mark brainlist.
1 answer:
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Answer:
A
Step-by-step explanation:
Using the sine ratio in the right triangle and the exact value
sin30° = , then
sin30° = =
=
( cross- multiply )
2x = 8 ( divide both sides by 2 )
x = 4
Answer:
See explanation below
Step-by-step explanation:
To find the principal square root of a number, we the number with an index of 2. The base then become the principal square root.
In the same way, we find the cube root of a number by writing the number with an index of 3 and the base becomes the cube root of the given number.
For instance: