Calculate, correct to one decimal plice the acute angle between the lines
3x - 4y + 5 = 0 and 2x + 3y -1 = 0
A. 70.69
B. 50.2
C. 39.8
D. 19.4

A. 70.69 is the correct answer.

Step-by-step explanation:

Given:

Two lines:

To find:

Angle between the two lines = ?

Solution:

Acute Angle between two lines can be found by using the below formula:

Where is the acute angle between two lines.

are the slopes of two lines.

Slope of a line represented by is given as:

So,

Putting the values in the formula:

So, correct answer is A. 70.69

heyyy

step-by-step explanation:

answer: all of the odd numbers were opened

the first person was the one that was opening all of the lockers. since one is odd, this causes all of the odd number lockers to be opened in the end.