plz help me to find out the correct option with solutions
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Step-by-step explanation:
7.(sinA+cosA)=p & (secA+cosecA)=q
q(p²-1)
=(secA+cosecA){(sinA+cosA)²-1}
=(secA+cosecA){1+2sinAcosA-1}
=(secA+cosecA)(2sinAcosA)
=(1/cosA+1/sinA)(2sinAcosA)
=(sinA+cosA/sinAcosA)(2sinAcosA)
=2(sinA+cosA)
=2p
8.
(b)9
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