a bunch 

lmao

So you live in Canada?Well me too!I live in Surrey British Columbia.

#ILoveThisFontSoMuch!

O K A Y!

Yes. Asin is for calc on pc

sin-1(0.9)=1.119769514999

sec-1(1.18307)=0.563747544468

Let the cost of a senior ticket  = S

Let the cost of a child's tickets   = C

So

3S +  1C  =   38       (1)

3S +  2C   =  52       (2)

Subtract (1)  from (2)

C  =  14       this is  the cost of a child's ticket ( in dollars) 

Sub this  into  (1)

3S  + 1 (14)  = 38

3S  +  14   =  38       subtract 14 from both sides

3S   =  24                 divide both sides y 3

S  =   8        this is the cost of a senior ticket  (in dollars)

pi times pi =9.8696044010893586...

pi^1/2=1.7724538509055159

 When two chords intersect each other inside a circle, the products of their segments are equal. 

So

8 * x  =  12 *  22

8 * x   =    264         divide both sides by 8

x  = 33

Let N be the number.....so.....

13N + 19  =  3N + 239        subtract 19 , 3N from both sides

10N   =  220          divide both sides by 10

N  = 22

3.87298334621

Use sin cos and tan and also Pythagorean theorem. And use law of sines and cosines if triangle isn't. A right triangle.