The phrase "a complementary role to" is correct and usable in written English.
It can be used to describe how one thing enhances or supports another in a specific context or relationship.
Example: "In our project, marketing plays a complementary role to product development, ensuring that customer needs are met."
Alternatives: "an auxiliary function to" or "a supportive role for".
Amino-acid tracers, such as MET, perform better for this purpose and thus play a complementary role to FDG.
And even in areas like the Middle East or Russia, Europe ought to be able to play a complementary role to America.
When Ennahdha drafted a constitutional article ambiguously declaring that Tunisian women should play a "complementary" role to men, the movement was forced to retreat in the face of strong criticism.
The paper has demonstrated that the ES indeed plays a complementary role to the NPCTF in the support of I&C research and development for nuclear power plants.
They will have a complementary role to police officers, tackling disorder and anti-social behaviour, carrying out routine patrols, making policing more visible, and providing reassurance to the public.
This so-called pair correlation conjecture plays a complementary role to the Riemann hypothesis.
While the ILO leads the Global Employment and Decent Work Agenda, FAO has a crucial complementary role to play in promoting decent rural employment, specifically with respect to employment in agriculture, in agro-processing and in rural marketing enterprises and industries.
"In general, ayurveda can play an effective complementary role to allopathy's emergency medical care system," says Vasudevan, who believes the lowest economic strata can benefit the most from these choices in treatment.
Physical therapists were named most often as being able to offer an important complementary role to the surgeon's evaluation.
In contrast, IS directly assesses respired particulate matter and pulmonary inflammation, thereby serving an important complementary role to traditional biomonitoring techniques.
Therefore, steady-state models serve a very useful complementary role to the dynamic kinetic models.
