Question

4x. Find the values of
In Fig. 10.40, ACB is a line such that ZDCA = 5x and ZDCB
ZDCA and DCB.​

Answer 1

Answer:

x=20

4x=80 (BCD)

5x=100(ACD)

EXPLANATION

As line ACB is a straight angle its sum is 180 degrees.

$5x + 4x = 180 \\ 9x = 180 \\ x = 180 \div 9 = 20$

x=20

4x=80

5x=100

Answer 2

Step-by-step explanation:

⭐Question:-

In Fig. 10.40, ACB is a line such that ZDCA = 5x and ZDCB ZDCA and DCB.

⭐Answer:-

Solution:-

$Here, \: ∠ACD \: + \: ∠BCD$

${Since, \: ∠ACD \: ∠ BCD \: are \: linear \: pairs \: }$

$∠ACD = 5x \: ,∠BCD \: = 4x$

$= > 5x + 4x = 180°$

$= > 9x = 180°$

$= > x = 20°$

$∴ \: x = 20 °\: (ans)$