Question #1ce92
3 Answers
Feb 7, 2018
Explanation:
We first need to find
Then, we use another trigonometric identity, which is
We have:
Feb 7, 2018
2cos a.
Explanation:
Trig identity -->
sin 2a = 2sin a.cos a
If sin a = 1 , then,
sin 2a = 2cos a.
Feb 7, 2018
Explanation:
Similarly, if
Hence,