Evaluate : secθ .cosecθ (90-θ ) - tanθ cot (90-θ )+ sin^2 55 + sin^2 35/ tan10 tan 20 tan 60 tan 70 tan 80 - Sarthaks eConnect | Largest Online Education Community
![cot(90 – x) | cot(90 – A) | cot(90 – theta) | Identity for cot(90 – x) | value of cot(90 – A) - YouTube cot(90 – x) | cot(90 – A) | cot(90 – theta) | Identity for cot(90 – x) | value of cot(90 – A) - YouTube](https://i.ytimg.com/vi/KJr0NCv1fBw/maxresdefault.jpg)
cot(90 – x) | cot(90 – A) | cot(90 – theta) | Identity for cot(90 – x) | value of cot(90 – A) - YouTube
![Why is the value of Cot(90) degree zero, when its a reciprocal of Tan(90) which is infinity? - Quora Why is the value of Cot(90) degree zero, when its a reciprocal of Tan(90) which is infinity? - Quora](https://qph.cf2.quoracdn.net/main-qimg-da9c76819cc2a045a9b749698bf876db.webp)