Question

please answer All 4 Questions​

Answer 1

Answer

1. sin (A- B) =1/2

Sin (A-B) =Sin30

(A- B) =30

A=30+B

Cos(A+B) =1/2

Cos(A+B) =Cos 60

(A+B) =60

P. T. V Of A

30+B+B =60

2B =60-30

2B =30

B = 30/2

B=15

NOW P. T. V Of B

A =30+15

A=45

2. 1/√2 / 2/√3 +2

1/√2 / 2+2√3 / √3

1/√2 *√3 / 2+2√3

√3 / 2√2 + 2√3√2

√3 / 2√2(1+√3)

3. 2+ (√3/2)^ -(√3/2)^

2