In class we learnt how to plot and sketch graphs of sin, cos and tan. Look at BBC Bitesize for a reminder. We also started looking at how to solve equations using trigonometric graphs - this is a tricky topic so we'll look at it again tomorrow.
If you want some help on this topic, look at MyMaths. Under 'Shape' > 'Trigonometry', there's lessons on Sine and Cosine Graphs and Tan Graphs. There's also a lesson on Transforming Trig Graphs - we'll do this topic in class next week.