12. prove that sin x and cos x are orthogonal functions in the vector space co, of exercise 10, with the inner product defined there
10. let cab be the vector space of all continuous real-valued functions with domain a s xs b prove that defined in cj by (f, g) xg(x) dx, is an inner product in c

the answer is 48m^2!

step-by-step explanation:

proofs involving isosceles triangles often require special consideration because an isosceles triangle has several distinct properties that do not apply to normal triangles.(more about triangle types) therefore, when you are trying to prove that two triangles are congruent, and one or both triangles, are isosceles you have a few theorems that you can use to make your life easier.

step-by-step explanation:

an isosceles triangle has two congruent sides and two congruent angles. the congruent angles are called the base angles and the other angle is known as the vertex angle. ∠bac and ∠bca are the base angles of the triangle picture on the left. the vertex angle is ∠abc

10.4 inches

step-by-step explanation:

2x2x2.6