# simple

1. ### Simple Trigonometric Identities Exercise - Got Stuck

I was just browsing a textbook and try to solve this exercise quoted as follows: I started by thinking in it's full form that is, \frac{\sin \theta }{\cos \theta}=\tan \theta Secondly, I noticed this lacking\cos \theta is to be found using this identity \cos\theta =\sqrt{1-\sin ^{2}\theta...
2. ### Simple derivative question; not good with rules though, help please!

Hey guys, have this equation: which is : f(x)=(cot(pi/2*3x-2x^2+ sqrt(x3+pi2) + 1)2 Need to find f'(0) Could someone please walk me through this start to end? Thanks!!
3. ### Find a 6 digits number - simple divisibility problem

abc and def are natural numbers. Find all numbers abcdef with abc*def multiple of abcdef.
4. ### Quite simple area/volume help needed

Hi guys, I am hoping to resit my GCSE maths exam (im from the UK) i am doing some mock questions but i am really struggling with 2 questions from the following 1. What is the combined area of the car park, office block A and office block B in (m2)? A. 3999.21 m2 B. 298.88...
5. ### likely simple probability questions

Hi All, New to probability and not great at it. I have two questions, and I'm looking for an explanation of how they can be solved numerically/using factorials. Both involve coins. First - if you flip a fair coin 8 times, what is the probability of getting 3 tails in a row? Second - if you...
6. ### Simple integration question

Why did the 2 disappear?