Before i evaluate the six trigonometric functions on this I need to clarify something, when i found the squar root of 85 i got 9.219544457......how do i round it? or am i supposed to leave it like that? I really dont know and im bad at rounding

Question

elisaneedshelp · Answer

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myininaya · Answer

Does it say to round?

elisaneedshelp · Answer

Not really but i dont think i can find the sin cos tan cot csc sec with 9.219544457

myininaya · Answer

You need to find that third side by using the Pythagorean thm. I wouldn't round sqrt(85). I would leave it as sqrt(85).

myininaya · Answer

Have you found the third side of the triangle, yet?

elisaneedshelp · Answer

it confuses me if i leave it like that but let me try

myininaya · Answer

It should be less ugly if you use the actual value instead of an approximated value
You do know a square cancels a square root, right?

elisaneedshelp · Answer

You mean like how on my calculator sqrt85^2 is 85

myininaya · Answer

yep.

myininaya · Answer

So what did you get for the other side?

myininaya · Answer

Let's call the missing side x.
We have $$x^2+6^2=(\sqrt{85})^2 $$
Did you get this far?

myininaya · Answer

All I did was use the Pythagorean thm

myininaya · Answer

You know you can write this as...
$$x^2+36=85 $$
Can you isolate x^2?

elisaneedshelp · Answer

the answer is 7

myininaya · Answer

yeah you did it
now just use the definition of sin(theta)=opp/hyp
and we will get to the other definitions in a second.

What measurement is given opp to theta?

myininaya · Answer

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