WHAT IS THE DEFINITION OF TRIGONOMETRY I WILL GIVE BRAINLIEST TO THE FIRST CORRECT ANSWER.

It's a branch of Mathematics that deals with relationships between angles and sides of a triangle. In application, it's mostly used in measuring distances

45

step-by-step explanation:

to find a percentage, add a decimal in front and multiply it by the other number.

.25 times 180= 45

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have