上 x^2-y^2 formula 156356-Circle formula x^2+y^2 nyosspixeckf

 \(\sin ^{1}x \sin ^{1}y=\pi \sin ^{1}(x\sqrt{1y^{2}}y\sqrt{1x^{2}})\), if x, y ≥ 0 and x 2 y 2 ≤1 36 \(\sin ^{1}x \sin ^{1}y=\pi \sin ^{1}(...