find the sum of the infinite series 1+cos4@/4! +cos8@/8! +.......
hello,
This question will get solved by applying rules and derivation. and you have to understand why it has happened like this. For that go to your maths teacher and ask him/her to help you out and explain you the steps he uses to solve it.
Some questions are important to understand as they might be get needed in understanding further concepts,answer questions and perform well with confidence.
Hope it helps!