Given that tan(t)=5/12, and 0 Which identity is best to start with?
What is the sec(t)?
Which identity can you now use to find cos(t)?
What is cos(t)?

One expression below in undefined, and the other expression has a well defined value. which expression is undefined and explain why it has no value. which expression is defined? what is the value of that expression and how do you know? what is a different expression using a trig inverse function that is also undefined?

*let m∠cob = 50°30’, m∠aob = 70° and m∠aoc = 20°30’. could point c be in the interior of ∠aob? why?

How do you write y-10=2 (x-8) in standard form