Question

if√2sintheta =1find the value of sec²theta.
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Answer 1

root2sin theta=1

sintheta=1/root2

BY FORMULA

A^2+B^2=C^2

here sintheta=oop/hyp=A/C=1/root2

1^2+B^2=(root2)^2

B=2-1

B=1

sec^2theta=hyp/adj=C/B=root2