Comparative evidence

kʷeḱ

• OInd. kāś- 'appear', 'make a show' (Whitney 1885: 18); 'be visible'; 'shine', 'be brilliant', 'have an agreeable appearance', 'shine brightly'; 'see clearly', 'survey' (MW: 280)

References

MW = Monier-Williams, M. 1899. A Sanskrit-English Dictionary. Clarendon Press.
Whitney 1885 = Whitney W. D. 1885. The roots, verb forms and primary derivatives of the Sanskrit language. A supplement to his Sanskrit grammar. Leipzig.