Domain and range of trigonometric functions and their graphs. Expressing sin (x±y) and cos (x±y) in terms of sinx, siny, cosx & cosy and their simple applications. Deducing identities like the ...

7 GIFs illustrate trigonometry concepts, making math more engaging and fun. ... but many fail to make the leap on how crucial circles are for trig functions. With static graphs and equations, ...

Signs of trigonometric functions. Domain and range of trigonometric functions and their graphs. Expressing sin (x±y) and cos (x±y) in terms of sinx, siny, cosx & cosy and their simple applications.