PLS I NEED HELP ASAP I NEEDA SHOW FULL WORK TOO

Yes, it is a right triangle.

Step-by-step explanation:

slope of AB -> (5 - 3) / (0 + 6) = 2/6 -> 1/3

slope of BC -> (-1 - 5) / (2 - 0) = -6/2 -> -3

This already proves that it has a 90 degree angle at angle B because the slopes are inverse and reciprocal.  A slope of 1/3 and a slope of -3 (inverse slopes) means that the lines are perpendicular to one another and form a 90 degree angle

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation:

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!