$\text{ If }\cos \theta =\frac{\cos \alpha -\cos \beta }{1-\cos \alpha \cos \beta }\text{ then }{\tan }^2\left(\frac{\theta }{2}\right){\tan }^2\left(\frac{\beta }{2}\right)=$

6th Floor, NCC Building, Durgamma Cheruvu Road, Vittal Rao Nagar, HITEC City, Hyderabad, Telangana 500081.

support@infinitylearn.com

1800-419-427

Sri Chaitanya College Admission Enquiries 040-66060606

Sri Chaitanya School Admission Enquiries 040-71045045 & 040-44600600 Ext 401, 402 & 425