How do you express sin(pi/ 8 ) * cos(( ( 5 pi) / 3 ) sin(π8)⋅cos((5π3) without using products of trigonometric functions?
2 Answers
The answer is
Explanation:
Apply the formula
You can easily prove this formula by using
Here,
Therefore,
Simply calculate the given terms.
Explanation:
You "using products of trig functions" statement is not clear. I took it to mean revising the expression to form a single trigonometric identity.
Thus, to avoid that, I simply evaluated the expression by each term.