Question

pls answer for this ❓❓❓​

Answer 1

Step-by-step explanation:

We know that

Sin 90 =1. ( Trigonometry)

Sin 30 = 1/2

A+B=90

A-B=30

A=B+30

Putting in 2 eq

30+B+B=90

2B=90-30

B=30

for 1

A=30+B

A=60

Therefore A is 60 and B is 30

Answer 2

Answer:

since,sin(A+B)=1

then,sin(A+B)=sin90° (sin90°=1)

1. A+B=90°

• and,sin(A-B)=½
• then,sin(A-B)=sin30° (sin30°=½)
• so,A-B=30°(2)
• adding equ.1 and 2,we get
• (A+B)+(A-B)=90°+30°
• 2A=120°
• A=60°
• now,putting the value of A=60°ineqa.1,we get B=30°
• hence,A=60° and B= 30°