one leg of a right triangle is 6.4 cm long the length of the second leg is 3.5 cm what is the length of the hypotenuse rounded t
1 answer:
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The first step in simplifying is this one (since tangent is sin/cos, and sec and is the same as 1/cos):
The next step is this:
Now the next step in this identity involves knowing another identity, which is this one (a Pythagorean identity, actually);
and 
So let's sub that in, like this:
which it does, right?
The next step is this:
Now the next step in this identity involves knowing another identity, which is this one (a Pythagorean identity, actually);
So let's sub that in, like this: