Question

solve the problem with step by step​

Answer 1

Answer:

(1)

Step-by-step explanation:

consider a triangle ACD. We know that In any traingle sum of the three angles must be 180 degree.

In a traingle ABD it is given that angle DAC=60 degree, Angle ACD=70 , Thus angle ADC=180-(60+70)=50.

Similarly If consider the traingle ABC , From thefigure we know that angle BAC=30+60=90

and ACB=70, thus Angle ABC=180-(90+70)=20 .

Similiarly if we consider the traingle ABD

angleADB=180-(30+20)=130.

(2)

Consider a traingle PQS, Angle PSQ=a=180-(55+60)=65.

To find c

consider a triangle PQR, we have angle P=180-(60+40)=80. Thus angle c=80-55=25.

Now consider triangle PSR , b=180-(40+25)=115 .