Searching for an AI Trigonometry Solver that actually shows the full step-by-step work — for free? Symbolab's trig calculator is the SERP incumbent, but its detail-level steps for trig identities and equations sit behind Symbolab Premium. AI-Math is built to fill that exact gap.
What Symbolab does well for trigonometry
Symbolab's trig coverage is broad: sin/cos/tan ratios, inverse trig, identity verification, and equation solving over arbitrary intervals all work. The symbolic engine handles unusual rewrites (product-to-sum, half-angle substitutions) reliably and it has been around long enough that most textbook problems return a clean answer.
Where Symbolab pinches trig students
Two specific frictions hurt:
- The "show steps" button paywalls quickly. Trig identity proofs benefit from seeing every substitution; Symbolab gives you the answer free but locks the intermediate rewrites behind Premium after a few queries.
- No native LLM explanations. Symbolab's steps read as a symbolic-manipulation trace — fine if you already know the identity catalogue, frustrating if you're still learning why you'd use the double-angle form over half-angle.
What the AI Trigonometry Solver does differently
AI-Math is an AI-first trigonometry solver: every problem is solved by a large-language-model math engine that explains the choice of identity in plain English, not just the algebra. Specifically:
- Free, no signup, no paywall on steps — sin/cos/tan, inverse trig, identity simplification, and trig equation solving all return full step-by-step work to guest users.
- Identity-aware reasoning. When you paste sin(2x)/(1+cos(2x)), the solver picks the right double-angle form, shows the substitution, and reduces to tan(x) with each rewrite labelled.
- Photo input on mobile. Snap a textbook trig problem (including triangle diagrams with labelled sides) and OCR converts it to LaTeX before solving.
- Automatic degree/radian handling. No mode switch — paste 30° or π/6 and the AI keeps the unit you used.
- Linked learning surface. Each solver page links to the trigonometry identities cheat sheet and the trigonometric identities survival kit so you can drill the concept after solving the problem.
Side-by-side on trig-specific tasks
| Task | AI-Math Trigonometry Solver | Symbolab Trigonometry |
|---|---|---|
| Evaluate sin(75°) exactly | Free step-by-step using sin(45° + 30°) | Free answer; steps gated after free quota |
| Simplify sin(2x)/(1+cos(2x)) | Free identity-aware reasoning to tan(x) | Free answer; full chain locked to Premium |
| Solve 2sin²(x) − 1 = 0 on [0, 2π) | Free general + specific solutions | Free; deeper interval reasoning paywalled |
| Photo input of a triangle diagram | Yes, OCR + diagram-aware | Photo input limited to printed text |
| Plain-English "why this identity" | Yes (LLM reasoning) | Symbolic trace only |
| Pricing for steps | $0 (free, unlimited steps) | Premium subscription required |
Verdict
For free, fully-explained, AI-first trigonometry help, the AI-Math Trigonometry Solver wins. If you already know the identity catalogue and just want a deep symbolic engine — and you're willing to pay for Premium — Symbolab is still credible.
Try the AI Trigonometry Solver right now — sin/cos/tan, identities, and trig equations all in one place, no signup required.
At a glance
| Feature | AI-Math Trigonometry Solver | Symbolab Trigonometry |
|---|---|---|
| Step-by-step on identities (free) | Yes — unlimited | Paywalled (Premium) |
| Plain-English "why this identity" | Yes (LLM reasoning) | No — symbolic trace only |
| Photo input (triangle diagrams) | Yes — OCR + diagrams | Limited (printed text) |
| Auto degree/radian handling | Yes | Manual mode switch |
| Signup required | No | For history / Premium |
| Pricing for full steps | $0 | Premium subscription |
Use the AI-Math AI Trigonometry Solver for free, fully-explained step-by-step trig help — sin/cos/tan, identities, and equations included. Pick Symbolab only if you already know the identity catalogue and want the deepest symbolic engine, and you accept the Premium subscription for full steps.