Question

(sintheta+costheta)^2=2 find theta​

Answer 1

Answer:

your answer attacted in the photo

Answer 2

Answer:

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$(sinθ + cosθ) {}^{2} = 2$

$1 + 2sinθ \: cosθ = 2$

$2sinθ \: cosθ \: = 1$

$sin2θ = 1$

$2θ = 90°$

$θ = 45°$