If tan thelta = - 4/3, what would be cos thelta ?
2 Answers
Mar 4, 2018
Explanation:
This is a 3, 4, 5 Pythagorean triple triangle in quadrant 4 as sin or y is negative and cos or x is not.
Mar 4, 2018
Explanation:
Use trig identity:
In this case:
There are 2 opposite answers, because t could be either in Quadrant 2, or in Quadrant 4 (tan t < 0).