keyword

best trigonometry textbooks

Monthly search volume and cost-per-click data for "best trigonometry textbooks" in US.

$ curl "https://app.seodata.dev/v1/keyword?q=best+trigonometry+textbooks&country=us" +--------------+------------------+ | volume | 70 | | cpc | $0.52 | | competition | 1 | | country | US | | updated | 2026-06-07 | +--------------+------------------+

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword	volume	cpc	overlap
trigonometry book	480	$0.58	10/20
books on trigonometry	480	$0.5	9/20
trigonometry textbooks	390	$0.47	10/20
best trigonometry textbook	140	$0.68	12/20
best book for trigonometry	140	$0.82	11/20
best books on trigonometry	140	$0.82	11/20
best trigonometry book	140	$0.68	10/20
best trig book	90	$0.58	12/20
best trigonometry books	90	$0.58	12/20
best book on trigonometry	90	$0.58	10/20

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+trigonometry+textbooks&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