In Vedic Astrology, the placement of Rahu in the 7th house has a significant impact on an individual's life. The 7th house of the horoscope is associated with marriage, partnerships, and relationships. When Rahu is placed in this house, it brings about many changes that can affect these areas of life.
For someone with Sagittarius as their lagna or ascendant sign, Rahu's placement in the 7th house can cause some complexities that must be kept in mind while interpreting astrological predictions. Additionally, Rahu aspects houses 9,1 and 4 from its position in the 7th house which further influence predictions related to various aspects of life.
One potential effect of Rahu in the seventh house for Sagittarius natives could be that they may have a strong desire for unconventional relationships. They may feel drawn to people who are different from them or find it challenging to conform to conventional relationship norms. As a result of this tendency towards non-conformity, they may have difficulty maintaining stable long-term relationships.
In some cases, this placement could also indicate that the native would try and marry into high society or someone who has a higher status than themselves- as ninth aspect on twelfth house could give such inclinations for foreign places and people associated with them.
Rahu’s aspect on Ascendant (first House) indicates an extroverted & ambitious persona with large social circle but there may tendencies towards over-indulgence & extravagance especially those involved public speaking or diplomatic dealings.
As for career prospects or profession, Sagittarians with this placement might have difficulty settling into traditional jobs due to their disregard for authority and institutional structures. This is amplified by Rahu’s affliction to fourth Bhava(from seventh) which indicates instability or frequent changes/difficulty maintaining harmony related to land+property matters alongwith domestic stability/beliefs & education
Alternatively,this placement could lead to a desire to pursue unconventional careers or hobbies driven by self-interest and passion but that are not always fruitful. It is also important to take caution as ninth (foreign tendencies) aspect of Rahu on 2nd house of wealth indicates the possibility of financial losses due to gambling or wrong advice from friends.
Rahu’s aspect on the ninth house, however, may bring fortune through foreign travel/affairs along with potential of spiritual/philosophical bent of mind which might also happen through in-laws and spouse's religious beliefs
It is crucial to note that Rahu is a shadow planet that can bring about unexpected changes in life. As Sagittarius ascendant nativity people possess confidence in dealing with problems, they must be vigilant as Ketu effects can block their discernment ability leading to hasty decisions/actions. The native's handling of challenges will determine the extent of their success.
To sum up, Rahu’s placement in the seventh house has significant implications for an individual with Sagittarius lagna. Although there can be some tensions related to relationships, unconventional career choices & public image; Rahu’s auspicious aspect on higher philosophical/humanitarian domains combined with its lesser malefic affliction on primary houses indicate great opportunity for exponential growth but only if the native ensures personal/internal harmony amidst external chaos!