Question

sin (A-B) = 1/2 and cos(A+B) = 0 find A and B

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Answer 1

Step-by-step explanation:

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Answer 2

hey there

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

we know that sin 30 = 1/2

therefore, A - B = 30 .......( 1 )

similarly

cos ( A + B ) = 0 ..... given

cos 90 = 0

therefore A + B = 90...... ( 2 )

adding both equations

- B and + B cancels out

2A = 120

=> A = 60

=> B = 90 - 60 = 30

therefore,

A = 60

B = 30

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