Answer: Context
Explanation: It is always very important for an engineer to keep the context of his/her expirament in mind.
Answer:
The first one A, " These are lines of equal air pressure".
Explanation:
cosΘ=−√558
tanΘ=−3√5555
cscΘ=83
secΘ=−8√5555
cotΘ=−√553
