Fill in the blank. if necessary, use the slash marks (/) for a function bar. if sin theta= 3/5, then cos theta=

4/5 or -4/5

Step-by-step explanation:

We are going to use the Pythagorean Identity:

We are given the value of which is 3/5 so plug that in:

Simplify:

Subtract 9/25 on both sides:

Take the square root of both sides:

answer: ouch. thats difficult

step-by-step explanation:

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