数理答疑团为您解答,希望对你有所帮助.
Sinθ+Cosθ=√2,(Sinθ+Cosθ)²=2,Sin²θ+Cos²θ+2SinθCosθ=2,SinθCosθ=1/2;
(Sin²θ+Cos²θ)/SinθCosθ=2,tanθ + 1/tanθ =2,tan²θ - 2tanθ+ 1=0,(tanθ-1)²=0
tanθ=1
数理答疑团为您解答,希望对你有所帮助.
Sinθ+Cosθ=√2,(Sinθ+Cosθ)²=2,Sin²θ+Cos²θ+2SinθCosθ=2,SinθCosθ=1/2;
(Sin²θ+Cos²θ)/SinθCosθ=2,tanθ + 1/tanθ =2,tan²θ - 2tanθ+ 1=0,(tanθ-1)²=0
tanθ=1