Question

if cos ( A+ B )= 0 , sin( A - B ) = half find a and b ​

Answer 1

Answer:

Heya........ ❤✌

i) cos (A+B)= 0

⇒cos(A+B) =cos 90°

A+B = 90----(1)

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

sin(A-B) =sin 30°

A-B=30----(2)

add (1) and(2)

2A=120

A =120/2

A=60

Substitute A= 60 in (1)

You can get B= 30

Therefore

A= 60 and B=30

Hope it's helpful........ ☺

Answer 2

Step-by-step explanation:

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