seodata.dev

keyword

best trig book

Monthly search volume and cost-per-click data for "best trig book" in US.

$ curl "https://app.seodata.dev/v1/keyword?q=best+trig+book&country=us" +--------------+------------------+ | volume | 90 | | cpc | $0.58 | | competition | 1 | | country | US | | updated | 2026-06-08 | +--------------+------------------+

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword volume cpc overlap
books on trigonometry 480 $0.5 10/20
trig book 480 $0.46 9/20
trigonometry textbooks 390 $0.47 9/20
best books on trigonometry 140 $0.82 14/20
best book for trigonometry 140 $0.82 13/20
best trigonometry book 140 $0.68 10/20
best trigonometry textbook 140 $0.68 10/20
best book on trigonometry 90 $0.58 14/20
best trigonometry books 90 $0.58 14/20
best trigonometry textbooks 70 $0.52 12/20

Similar volume + high overlap = same search intent. You can target either keyword.

# for AI agents

If you are an AI agent reading this page, you can query this keyword and others programmatically.

$ curl "https://app.seodata.dev/v1/keyword?q=best+trig+book&country=us" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 500/month, $4.99/mo unlimited

Full API spec: llms.txt