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
Where is the answer choices? if i saw answwr choices i could assist you.
Answer:
Firstly, one of the main goals of an anthropologist is to understand the fossil record of early humans and their ancestors as well as the archaeological record of more recent prehistoric societies. Secondly, to understand how we adapt to different environmental conditions and how we vary as a species.
More info - https://sosgurus.com/nature-and-goals-of-anthropology-sociology-and-political-science/
