Question

Pls answer fast.......I will mark appropriate answer brainliest

Answer 1

Answer:

19.  -1.1666666....

Step-by-step explanation:

MARK BRAINLIEST

Answer 2

Answer:

∵AB=AC⇒∠ABC=∠ACB=x(say)

Let ∠BAC=y

We know,

Exterior angles = sun of interior opposite angles

or, 120° =∠ABC+∠BAC

or, 120° =x+y−−−(1)

Again, ∠ACB+∠ACD=180°

or, x+120=

=180°

∴x=60°

From (1),

60°+y=120°o⇒

y=60°

∴ ∠A=60°