TELL ME THE ANSWER FASSSSSTTTTTT
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Answer:
SecA=√2 (Given)
CosA=1/√2
Sina=√1-Cos²A
=√1-1/2
=1/√2
TanA=SinA/CosA=1
substitute all these values in hiven expression
=3(1/√2) ²+5(1) ³/4(1)²-(1/√2) ²
=3/2+5/4-1/2
=13/2+7/2
=20/2
=10
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