Answer:
A.
Step-by-step explanation:
Graph B must be incorrect as this is a directly proportional relationship. Likewise, graph C shows an inversely proportional relationship.
Between graph A and D, only graph A passes through the origin, which is true because if length is zero, perimeter is zero.
Hence the answer is Graph A.
The identity in question is
cos(a - b) = cos(a) cos(b) + sin(a) sin(b)
so that
cos(a - b) = 12/37 cos(a) + 3/5 sin(b)
Since both a and b lie in the first quadrant, both cos(a) and sin(b) will be positive. Then it follows from the Pythagorean identity,
cos²(x) + sin²(x) = 1,
that
cos(a) = √(1 - sin²(a)) = 4/5
and
sin(b) = √(1 - cos²(b)) = 35/37
So,
cos(a - b) = 12/37 • 4/5 + 3/5 • 35/37 = 153/185
Answer:
inches
Step-by-step explanation:
13*6*2.5
The terms of an arithmetic progression, can form consecutive terms of a geometric progression.
- The common ratio is:
- The general term of the GP is:
The nth term of an AP is:
So, the <em>2nd, 6th and 8th terms </em>of the AP are:
The <em>first, second and third terms </em>of the GP would be:
The common ratio (r) is calculated as:
This gives
The nth term of a GP is calculated using:
So, we have:
Read more about arithmetic and geometric progressions at:
brainly.com/question/3927222
