How do you express $sin (\frac{π}{8}) \cdot cos (\frac{π}{2})$ $sin(pi/ 8 ) * cos(pi/2 )$ without using products of trigonometric functions?

Question

1478 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2016-02-24T23:25:37

Because $cos (\frac{π}{2}) = 0$ $cos(pi/2)=0$ hence the product $sin (\frac{π}{8}) \cdot cos (\frac{π}{2}) = 0$ $sin(pi/8)*cos(pi/2)=0$

How do you express sin(π8)⋅cos(π2)sin(pi/ 8 ) * cos(pi/2 ) without using products of trigonometric functions?