Recent content by morr485

I'm trying to post my question.

[b]1. Two towers A and B are 18.5 miles apart. The bearing from A to B is N65E. A fire is spotted by ranger at both towers. Its bearing from A and B are N28e and N16.5W. This makes a triangle with A and B and C the fire. Can anyone give me a clue and finding angles A and B?[b]2. a/sin A = b/sin...

[b]1. sec^2(x) = (1 + sqrt3) - (1 - sqrt3)*tan (x) [b]2.sec^2(x) = tan^2(x) +1 [b]3. tan^2(x) + tan(x) + (1 - sqrt3)*tan(x) - sqrt3 = 0 tan^(x)[tan(x) +1 +1 - sqrt3) -sqrt(3) = 0 tan^2(x) + (2 - sqrt3) - sqrt(3) = 0

danago thanks for the hint.

[b]1. Verify this identity: a*sin Bx + b*cos Bx = sqrt(a^2 + b^2)sin(Bx + C) where C= arctan b/a [b]2. a/sqrt(a^2+b^2)sin Bx + b/sqrt(a^2+b^2)cos Bx=cos C sin Bx + sin C cos Bx= [b]3.a*sin Bx + b cos Bx = sqrt(a^2 + b^2) sin(Bx + C) Homework Statement Homework Equations...

D.H. What distribution of equation should I use? I'm from the behavioral sciences and I am not familiar with this problem.

Let the p.m.f. of M be defined by f(x)=x/8,x=1,3,4. What is the mean of M? Is this the same an E(M) of a binomial?

[b]1. Let the p.m.f. pf M be defined by f(m)=x/8, x=1,3,4. What is the mean of M? [b]2. n!/n-r*p^n*(1-p)^n-r [b]3. 3!*1/3^3*2/3^2=.59 This is not the correct answer!