Posted by nicole on Tuesday, October 11, 2011 at 6:06am.
tan 30 = 1/sqrt 3
so
1/sqrt 3 = a/9
a = 9/sqrt 3 = 3 sqrt 3
Related Questions
Trig - tan 15° using composite argument? - tan 15° tan (45°-30°...
calculus - can anyone tell me if tan-1x= 1 over tan x? No. They are different. ...
math - I have a table with this info. plant growth: Week 1 - 1 inch, week2 -4 ...
Math - Can you help me? 360 in^ = _____ ft^ ( ^ means 2 ) So which would the ...
geometry - The height of the figure shown at the right is 20 inches, and the ...
Calculus - In a healthy person of height inches, the average pulse rate in beats...
calculus - Differentiate e^(2x^3+x) X tan(x^2) tan e^x / ln(x^6/2-3x+3e) cos(tan...
Calculus : Derivative - If tan^-1(x^2-y^2/x^2+y^2) = a, prove that dy/dx = x(1...
Maths Calculus Derivatives - Find the first derivative for the following ...
math - Xenia wants to stuff a cube-shaped footstool that measures 10.25 inches ...
For Further Reading
