Use identities to find the exact values at a for the remaini

Use identities to find the exact values at a for the remaining five trigonometric functions csc alpha= squareroot 2 and pi/2

solution-

we know that-

sec(alpha) = 1/cos(alpha)

and

cos(alpha ) you already find so put the value of cos(alpha) then we have sec(aplha)

sec(alpha) =1/[-1/sqrt(2)]

sec(alpha) =-sqrt(2)