What fraction is equivalent to -(7/8 A: -(7/-8) B: -7/8 C: -(-7/8) D: -7/-8
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ANSWER: ∠T = 32.4°
Remember the formula for the basic trig functions: SOH CAH TOA
Since you want to find cosine for <T, you need the adjacent side length as well as the hypotenuse's length which can be found using the Pythagoras's Theorem with <em>a </em> and <em>b</em> being the side lengths and <em>c</em> being the hypotenuse.
Using the theorem, we get c=37
Now use the cosine formula to get <T = 12/37 to get the final answer.
Anything to the zeroth power is equal to 1. (The numerator is equal to one because of this rule)
So.