Question

If sin (a+b) = 1 and cos (a-b) = 1 , find a and b .​

Answer 1

here your answer, I hope it will help you

Answer 2

Answer :

a=45

b=45

Step-by-step explanation:

=> sin ( a + b ) = 1

=> sin ( 90 ) = 1

∴ 90 = a + b _____ ( 1 )

=> cos ( a - b ) = 1

=> cos ( 0 ) = 1

∴ 0 = a - b _____  ( 2 )

Add  ( 1 )  and  ( 2 )

=> 0 + 90 = a + b + a - b

=> 90 = 2 × a

=> a = 45

From  ( 2 )

=> a - b = 0

=> b = a

=> b = 45

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