As we saw in the video, the hyperbolic trigonometric functions [cosh(t), sinh(t)] are a parametrication of one branch of the unit hyperbola, which has Cartesian equation Correct x^2-y^2=1 O x^2-y^2=1 [cosh(1), sinh(1)] 1 - A(1) = 0.5 0 N The familiar circle trigonometric functions [cos(t), sin(t)] are a parametrication of the unit circle, which has Cartesian equation x^2+y^2=1In the case of the circle, the area of the circular sector between [1, 0], [0, 0] and [cos(t), sin(t)] is _n l , as we can see because it is i of the area ofthe unit circle. 30 in both parametrisations of the circle and hyperbola, the parameter r corresponds to twice the area under an arc