im not sure how to approach (a) since the angles are different? Any help is appreciated
C3 exam question help Watch
- Thread Starter
- 09-10-2017 22:09
- 09-10-2017 22:12
Haha. That's a good exam question.
There's a lesser known identity relating sin and cos (not the squared one). It's cos(x) = sin(A-x)
See if you can figure out what A is from looking at the graphs.
- 09-10-2017 22:17
This might help. What value of A maps the moving graph onto the sin curve?
Sorry do this one.
That's in radians
https://www.desmos.com/calculator/52pdkfadkgLast edited by carpetguy; 09-10-2017 at 22:24.
Last edited by simon0; 10-10-2017 at 02:44.
- 10-10-2017 02:13