I am not so good at maths secondly, I didn't get it,whether that "a" is alpha or a variable... but, I think, you should first divide 'π' by 3. i.e. 3.14/3 so the equation will be like: cos[a+1.046]. Then first divide cos with 'a' and then multiply cos with '1.046' and add both, in this way take out the value..
Comments
That's really about as simplified as it gets, but we can write it in a different form.
Recall that cos(x + y) = cos(x)cos(y) - sin(x)sin(y).
cos(a + π/3)
= cos(a)cos(π/3) - sin(a)sin(π/3)
= cos(a)/2 - sin(a)(√3)/2
= (cos(a) - sin(a)√3)/2.
I can't wait to be level 2 so I can give these people negative votes.
I am not so good at maths secondly, I didn't get it,whether that "a" is alpha or a variable... but, I think, you should first divide 'π' by 3. i.e. 3.14/3 so the equation will be like: cos[a+1.046]. Then first divide cos with 'a' and then multiply cos with '1.046' and add both, in this way take out the value..
I did the problem w/a scientific calculator. I got 1/2 or 0.5. The website below is where I got it from. Hope it helps.