Trigonometry - verify identity:

cos (x - y) / sin (x + y) = 1 + cotxcoty / cotx + coty

The required verification is given below.

Step-by-step explanation:

To verify:

Consider,

Left hand side =

Now by using Trigonometric identities,

Now we get,

Left hand side =

Now dividing Numerator and Denominator by we get

Left hand side =

Now we have identity

and then

Left hand side =

Which is equal to our Right hand side required identity

This is the way we have

Left hand side = Right hand side   Proved.

answer: 4 meters

step-by-step explanation: to you understand 2/3 better you can do 1 divided by 3 = . then multiply that by the 2 which is .66666666666666667 then you would do 6 x .66666666666666667 which is 4.      

hope this .