Question

If (α + β) = 90∘, then the value of √cosαcosecβ− cosαsinβ is

Answer 1

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Answer 2

Answer:

Solution

Psinα=Qsinβ=Rsinγ

Ifα=90⇒P=Qcosβ=Rcosecγ

∴Qcosecγ−Qcosec=0