Right Triangle Solver
Solve a right triangle using two independent measurements. Find missing sides and angles with formulas, worked examples, and step-by-step guidance.
Added 12 Nov 2026
Analysed 12 Nov 2026
via 
What we found
- Analytics set tracking cookies before any opt-in, and we found no consent manager.
- It sends one of the six security headers we check; Content-Security-Policy is among those missing.
- It publishes SPF but no DMARC record, so receivers decide for themselves what to do with email that fails.
- Built with Astro, the site is hosted on Vercel, with a domain registered 6 months before launch.
Built with: 13 technologies
Embed this on your site
For light pages
<a href="https://firstsited.com/launch/dt87r8ih/right-triangle-solver"><img src="https://firstsited.com/badge/dt87r8ih/stack.svg" alt="Right Triangle Solver tech stack on FirstSited" height="28"></a>
For dark pages
<a href="https://firstsited.com/launch/dt87r8ih/right-triangle-solver"><img src="https://firstsited.com/badge/dt87r8ih/stack.svg?theme=dark" alt="Right Triangle Solver tech stack on FirstSited" height="28"></a>
| Technology | Type |
|---|---|
| Infrastructure | |
Spaceship DNS
|
DNS |
Vercel
|
Hosting |
| HSTS | Security |
ImprovMX
(2)
|
Email forwarding |
| Build & Framework | |
Tailwind CSS
|
CSS framework |
Google Fonts
|
Font |
Astro
|
Meta-framework |
| Analytics & Marketing | |
Google Ads
|
Advertising |
Google AdSense
(4)
|
Advertising |
Pinterest
|
Advertising |
Google Analytics
(4)
|
Analytics |
Google Search Console
|
SEO |
Google Tag Manager
(2)
|
Tag management |
Each technology links to its own page: which other new sites launched with it.
Site checks
| Custom title and meta description | |
| Open Graph tags (title, image, description) | |
| Twitter card meta tags | |
| Canonical URL declared | |
| Responsive viewport meta tag | |
| Favicon present | |
| Semantic HTML (nav, main, article) |
| Referrer-Policy | |
| X-Frame-Options | |
| Permissions-Policy experimental | |
| X-Content-Type-Options | |
| Content-Security-Policy | |
| Strict-Transport-Security | |
| X-XSS-Protection deprecated, not counted |
| Privacy policy /privacy/ | |
| Terms of service /terms/ | |
| Consent manager not detected; analytics set tracking cookies on our visit with no opt-in step |
Mentions: Cookies, Do Not Sell, Updated: November 5, 2026
| robots.txt | |
| sitemap.xml 1,076 URLs | |
| security.txt optional | |
| llms.txt | |
| ads.txt | |
| humans.txt optional |
| llms.txt published | |
| No AI bots blocked in robots.txt | |
| Content-Signal none declared | |
| Link headers none advertised |
| State | Record | Status |
|---|---|---|
| SPF ~all | Soft-fail (~all), common and accepted | |
| DMARC | Not published | |
| DKIM | Not found at common selectors | |
| MTA-STS | Not deployed | |
| TLS-RPT | Not configured |
Without DMARC, receivers fall back to their own rules for email that fails SPF.
Hosting and network
| Network | AMAZON-02 - Amazon.com, Inc., US AS16509, US |
|---|---|
| DNS | Spaceship DNS authoritative nameservers |
| DNSSEC | Enabled DNS answers are signed |
| Certificate | Let's Encrypt valid 21 Oct 2026 to 19 Jan 2027, as captured |
| Domain age | 6 months registered Apr 2026, Spaceship, Inc. |
| Green hosting | No record per The Green Web Foundation |
| Page build | 3 JS files, 3 CSS files 4 third-party domains |
| Brand colours |
Storage: 5 items
| Name | Lifetime | Set by |
|---|---|---|
| _ga | 1y | Google Analytics |
| _ga_8KTR6KSRG1 | 1y | Google Analytics |
| __eoi | 5mo | Google Ads |
| Key | Size | Set by |
|---|---|---|
| google_adsense_settings | 55 B | Google AdSense |
| google_auto_fc_cmp_setting | 3 B | Google AdSense |
Performance
| Measure | This site | Reading |
|---|---|---|
| Server response | 143 ms | good, faster than 80% of sites |
| Largest contentful paint | 412 ms | good |
| Layout shift | 0.36 | a lot |
| Page weight | 1.8 MB | fair |
| Image weight | 6 KB | light |
| Images | 9 | 5 larger than shown, 3 without width and height, 1 without alt text |
| Third-party domains | 4 | |
| Console errors | 0 | none |
| Failed requests | 0 | none |
From a single automated render of the home page. A quick guide, not a substitute for Lighthouse or field data. How we measure
Notes
-
Looks AI-built: few AI signals.
How much the site looks AI-generated. It is a pattern match shown for interest, not a verdict.
Which signals fired
Signal Points AI palette signals +5 AI writing signals +3 AI typography signals +15 - Analytics set tracking cookies on our visit and no consent manager was detected. UK and EU GDPR require opt-in before tracking runs, and more than 20 US states require honouring opt-out requests.
- Performance comes from one render on 12 November 2026 and will vary between visits.
How we know
FirstSited records what new websites are built with, usually within a day of going live. Most we find ourselves, by watching public internet infrastructure for brand-new sites; the rest come from Product Hunt, Hacker News and PeerPush. We checked this one in full: its tech stack, DNS, security headers and page basics. This page is what we saw on 12 November 2026; the live site may have changed since.
Every technology below links to its own page: which other new sites launched with it. Watch any of them and get every new site that uses it as it goes live, from £15 a month.