👉 Learn how to solve equations using half-angle identities. To do this we will replace every trig function with half angles ...

In this video I will show you how to solve a trigonometric equation using the double angle for cosine. When applying the ...

Some exact trigonometric values are equivalent. For example, \( \frac{1}{√2}\) = \( \frac{√2}{2}\). The denominator has been rationalised. To be successful with exact trigonometric values, especially ...