If a line makes angle α,β,γ with coordinates axis then prove that (sin⁡α )^2+(sin⁡β )^2+(sin⁡γ )^2=2

If a line makes angle α,β,γ with coordinates axis then prove that (sin⁡α )^2+(sin⁡β )^2+(sin⁡γ )^2=2

यदि एक रेखा निर्देशांक अक्षो के साथ α,β,γ कोण बनती है तो सिद्धकरे (sin⁡α )^2+(sin⁡β )^2+(sin⁡γ )^2=2