How do you solve 4cos(t)=3 4cos(t)=3?

2 Answers
Jun 12, 2018

t~~41.41^@t41.41

Explanation:

4cos(t)=34cos(t)=3

cos(t)=3/4cos(t)=34

cos^-1(3/4) = tcos1(34)=t

t~~41.41^@t41.41

Jun 12, 2018

t = +- 41^@41 + k360^@t=±4141+k360

Explanation:

4cos t = 34cost=3

cos t = 3/4cost=34

Calculator and unit circle give 2 solutions for t:
t = +- 41^@41 + k360^@t=±4141+k360