+0  
 
0
119
11
avatar+1770 

Please help asap, ty!

RainbowPanda  Apr 24, 2018
 #1
avatar+942 
+2

64. 

 

You tangent for 64.

 

sin 28 = 26 / YX

 

sin 28 is about 0.27

 

0.27 = 26/YX

 

you can solve for YX

GYanggg  Apr 24, 2018
 #2
avatar+1770 
0

What..? I dont understand..

RainbowPanda  Apr 24, 2018
 #4
avatar+942 
+3

What do you not understand.

GYanggg  Apr 24, 2018
 #5
avatar+1770 
0

I don't understand how to get YX from that

RainbowPanda  Apr 24, 2018
 #6
avatar+942 
+3

It is an equation, 0.27 =  26/YX

 

you multiply both sides by YX

 

0.27 * YX = 26

 

YX is about 96.

GYanggg  Apr 24, 2018
 #7
avatar+942 
+3

I hope this helped.

GYanggg  Apr 24, 2018
 #8
avatar+1770 
0

But that's incorrect...YX is 55.4 mm and YZ is 48.9 mm

I just need to figure out how to get those answers

RainbowPanda  Apr 24, 2018
 #3
avatar+942 
+3

To solve YZ, you use tangent. 

 

Tangent is opposite over adjacent.

 

Tan 28 = 26/ YZ

 

you can solve for YZ

GYanggg  Apr 24, 2018
 #9
avatar
+2

Sin(28) = 26 / YX

 

0.46947... = 26 / YX     cross multiply

0.46947*YX = 26          divide both sides by 0.46947

YX = 26 / 0.46947

YX =~55.4 mm

 

Tan(28) = 26 / YZ

0.531709 = 26 / YZ          Cross multiply

0.531709*YZ = 26            Divide both sides by 0.531709

YZ = 26 / 0.531709

YZ =~48.9 mm

Guest Apr 24, 2018
 #10
avatar+1770 
+1

Tysm! :D

RainbowPanda  Apr 24, 2018
 #11
avatar
+1

63)

 

(x + 2)^2 + y^2 =25.......................(1)

-x + y = 1.......................................(2)

 

y =1 + x sub this into (1)

(x + 2)^2 + (1 + x)^2 = 25, solve for x

 

(x + 1)^2 + (x + 2)^2 = 25

 

Expand out terms of the left hand side:

2 x^2 + 6 x + 5 = 25

 

Divide both sides by 2:

x^2 + 3 x + 5/2 = 25/2

 

Subtract 5/2 from both sides:

x^2 + 3 x = 10

 

Add 9/4 to both sides:

x^2 + 3 x + 9/4 = 49/4

 

Write the left hand side as a square:

(x + 3/2)^2 = 49/4

 

Take the square root of both sides:

x + 3/2 = 7/2 or x + 3/2 = -7/2

 

Subtract 3/2 from both sides:

x = 2 or x + 3/2 = -7/2

 

Subtract 3/2 from both sides:

 

x = 2   and   y = 3                     or     x = -5   and   y = - 4

Guest Apr 24, 2018

35 Online Users

avatar

New Privacy Policy

We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive information about your use of our website.
For more information: our cookie policy and privacy policy.