Advanced Math/Precalc

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Expert: Sherman D. - 12/6/2007


Question
hi, Could you please help me with this problem?

Use the given substitution to express the given radical expression as a trigonomic function without radicals. Assume that a > 0 and 0 < theta < pi/2.                 Let x = (a)sec(theta) in square root of (x^2-a^2).     Then find sin(theta), cos(theta), cot(theta)

Answer
sqrt(x^2 - a^2)
sqrt((a * sec(A))^2 - a^2)
sqrt((a^2 * sec(A)^2) - a^2)
sqrt((a^2)(sec(A)^2 - 1))
sqrt((a^2)(tan(A)^2))
+atan(A)

Now is this suppose to be equal to something

for ex:

5 = sqrt(x^2 - a^2)

if you can't tell me, then maybe you can figure out the rest.

Unless you meant sin(A) = atan(A)

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Sherman D.

Expertise

I can answer questions dealing in mathematics of all kinds except for Physics and Calculus, but i can answer questions in Pre-Calculus and Chemistry. I can also answer questions in Recipes of all kinds. I can find games cheats/walkthroughs, but i can`t find a specific game online or offline. I can also do history and recipes for alcoholic beverages.

Experience

Mathematics, Recipes, History, and Games.

Education/Credentials
High School graduated. I graduated with honors, and i was in Beta Club for a year and a half.

Awards and Honors
Principle's list and A and B honor roll in high school only.

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