Proof by induction in trigonometry.
5080
How can we sum up $\sin$ and $\cos$ series when the angles are in arithmetic progression?
143968
Proving this inequality by mathematical induction
26790
Proving the geometric sum formula by induction
124917
Fibonacci numbers and proof by induction
34407
Vandermonde determinant by induction
24656
Proving that $\frac{\csc\theta}{\cot\theta}-\frac{\cot\theta}{\csc\theta}=\tan\theta\sin\theta$
33396
Generalizing a Trig Identity
61939
Induction of inequality involving AP
136700
Proving divisibility of expression using induction
66019
Revisited: Binomial Theorem: An Inductive Proof
153975
Proving mathematical induction with arbitrary base using (weak) induction
33100
Trigonomnetric equality involving tg
147886
Proof of the angle sum identity for $\sin$
91896
Induction (Geometric sequence)
121544
Proof by Induction: $2(\sqrt{n+1} - \sqrt{n}) < \frac{1}{\sqrt{n}} < 2(\sqrt{n}-\sqrt{n-1})$
157601
Proof a formula of the Fibonacci sequence with induction
104349
Proof by induction involving symmetric groups