If f(x)cosx-sind , then r(r/4) is equal to – InterviewSolution

1.

If f(x)cosx-sind , then r(r/4) is equal to

Answer»

f(x) = |cosx - sinx|

Then,f(pi/4) = | cos pi/4 - sin pi/4|

We know, cos pi/4 = sin pi/4 = 1/sqroot (2)

= |1/sqroot (2) - 1/sqroot (2)|= 0

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