Use the half angle identity, tan157.5=(1-cos315)/sin315
cos315=cos(-45)=√2/2, sin315=-√2/2
tan157.5=(1-√2/2)/(-√2/2)=(2-√2)/(-√2)=(2√2-2)/(-2)=1-√2
Answer:
-9/20
put 45 over 100, then divide them both by 5.
Answer:
no
Step-by-step explanation:
This is based on the 1500 adults answering the question, but because there are over 300 million in the US, they would need to survey more to make it more logical and valid