Δabc is a right triangle in which is a right angle, ab = 1, ac = 2, and bc = . cos c × sin a =

In triangle ABC , A is right angle

Here it is given that AB=1 , AC=2 ,So by using pythagoras theorem we will get BC=√(1)²+(2)²=√5

So cosC=

And sinA=sin 90°=1

So the cosC × sinA=2/√5 (Answer)

the graph in the attached figure

step-by-step explanation:

we have

using a graphing tool

the graph in the attached figure

the roots are ( x-intercepts) x=-0.5,x=1,x=3

the y-intercept is the point (0,3)

step-by-step explanation: it is d