Question

If (Cos A + sin A)=√2sinA, show that (sin A - cos A) =√2cosA​

Answer 1

Answer:

Step-by-step explanation:

cosA=sinA(√2-1)

substitue value of cosA as given above in what we have to proove.

L.H.S

sinA-sinA(√2-1)

=sinA(√2-1-1)

=sinA(2-√2)

R.H.S

sinA(√2-1)√2

sinA(2-√2)

henceL.H.S=R.H.S

Answer 2

Answer:

refer to the clip.

Step-by-step explanation:

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