Please help me 20 points Where does the Pythagorean Identity sin2 Θ + cos2 Θ = 1 come from? Given the Cos Θ = 4/5, how would you use it to find the sine and tangent values of the angle? Explain.

Step-by-step explanation:

Kindly refer to the attached image of a right angled .

Let

Sides BC = a

AB = c and

AC = b respectively.

To prove:

Proof:

Using Sine and Cosine values:

As per Pythagorean theorem:

Considering the LHS of :

Now, using equation (1):

Hence, proved that :

Now, we are given that:

To find, sine and cosine values of the angle i.e. and

Using :

We know that:

answer: since the question is talking about growth you have to use the growth formula which is inital amount (1 + growth)^time

step-by-step explanation:

the intial amount is 1200, the growth is 4.8, and the time is 7. plug those numbers into the equation, also i think you have to change 4.8 into a percent. but, i have forgotton how to do that. if this is a online class go on to the lesson.