Taxx2If tan0 = _ thenis – InterviewSolution

1.

Taxx2If tan0 = _ thenis

Answer»

If tan∅ = a/x , so a = xtan∅

now put the value of a in the expression

so x/{√a²+x²} = x/√(x²tan²∅+x²) = x/x(√1+tan²∅) = 1/sec∅ = cos∅

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