2. If tant^-1 x+ tan^-1 y+ tan^-1 z =pie/2 then show that xy + yz + zx: = 1​

15%

step-by-step explanation:

use the table and count the number of guesses that has two correct answers.

the following are two correct answers

10010, 01100, 11000

a total of 3 numbers having 2 correct guesses out of 20 questions.

probability of getting 2 correct guesses = the number of questions getting 2 correct answers / total number of questions.

= 3/20

to convert it into percent multiply by 100, we get

= 3/20 * 100

= 15%

the answer is 15%

you.

point a is the center of the circle that passes through points e, f, and g and the center of the circle that passes through points x, y, and z.