MATH 141 PSU FINAL EXAM FREQUENTLY
TESTED ACTUAL QUESTIONS WITH CORRECT
ANSWERS
Question 1.
cos^2x
ANSWER
1-sin^2x
Question 2.
sin^2x
ANSWER
1-cos^2x
Question 3.
sec^2x
ANSWER
1+tan^2x
Question 4.
tan^2x
ANSWER
sec^2x-1
Question 5.
sin2x
ANSWER
2sinxcosx
1/3
TESTED ACTUAL QUESTIONS WITH CORRECT
ANSWERS
Question 1.
cos^2x
ANSWER
1-sin^2x
Question 2.
sin^2x
ANSWER
1-cos^2x
Question 3.
sec^2x
ANSWER
1+tan^2x
Question 4.
tan^2x
ANSWER
sec^2x-1
Question 5.
sin2x
ANSWER
2sinxcosx
1/3