Answer:
A. 1.0 is the correct answer.
Explanation:
The statement 'nonstandard forms of English can be as effective as the standard form of English' can be extracted in the excerpt from "Mother Tongue".
<h3>What is a mother tongue?</h3>
A mother tongue refers to a special language spoken by society and adopted as its own by its habitants.
There are many countries around the world that adopted English as their mother tongue and expressions in such countries may be certainly effective.
Mother tongue makes also reference to the language which an individual speaks from his/her childhood.
Learn more about the “Mother Tongue” excerpt here:
brainly.com/question/10046495
Answer:
A
Explanation:
You must know the basics of Trigonometry to solve this.
First, you must know that

lies in the second quadrant, so sin is negative.
Next, since
pi/4, is the reference angle of 3 pi/4, this means that we can set up a right triangle with pi/4 as an angle, we get


So the answer is A