How do you express cos(3π2)⋅cos(5π4) without using products of trigonometric functions?
2 Answers
Feb 26, 2016
0
Explanation:
From knowledge of the graph of cosx , we know that
cos(3π2)=0 and
cos(5π4)=−cos(π4)=−1√2
⇒cos(3π2).cos(5π4)=0.(−1√2)=0
Feb 26, 2016
It is equivalent to
Explanation:
To express
Although,