Half angle formula (Spherical trigonometry) || sinA/2,cosA/2&tanA/2 | B.Sc 3rd year maths

Derivation of half angles formula for spherical triangle
Spherical trigonometry /astronomy B.Sc maths part 3 papar 8
Most important questions for 2019
This video is useful for students of BSc maths 3rd year
Paper-8 optional


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