Last month Rudy’s Tacos sold 22 dinner specials. The next month they released a new commercial and sold 250% of last month’s din
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Answer:
see explanation
Step-by-step explanation:
Using the identity
tan x =
Consider the left side
= ( multiply numerator and denominator by cos²x to clear fractions
= ← ( cos²x + sin²x = 1 ]
= cos²x - sin²x
= right side , thus proven
let's recall that on the II Quadrant x/cosine is negative whilst y/sine is positive,
also let's recall that the hypotenuse is simply the radius distance and thus is never negative.