Question

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Answer 1

Step-by-step explanation:

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Answer 2

Answer:

A = 45

B = 15

Step-by-step explanation:

Sin(A-B) = 1/2

we know that,

sin30°= 1/2

therefore,

A-B= 30 --1

Cos(A+B)= 1/2

we know that,

cos60°=1/2

therefore,

A+B=60 --2

adding equation 1 and 2

= (A-B) + (A+B) = 30 + 60

= 2A = 90

= A = 90/2

= A = 45

substituting A=45 in 1

1 --= A - B = 30

= 45 - B = 30

= 45 - 30 = B

= 15 = B