1.If α,β,γ∈[0,π]\alpha, \beta, \gamma \in [0, \pi]α,β,γ∈[0,π] and if α,β,γ\alpha, \beta, \gammaα,β,γ are in AP, then sinα−sinγcosγ−cosα\frac{\sin \alpha - \sin \gamma}{\cos \gamma - \cos \alpha}cosγ−cosαsinα−sinγ is equal toa.sinβ\sin \betasinβb.cosβ\cos \betacosβc.cotβ\cot \betacotβd.2cosβ2 \cos \beta2cosβLogin to continueOnly logged in users canattempt or see the solution.
