Question

If cos theta= cos alpha cos beta/1-sin alpha sin beta prove that tan theta

Answer 1

Answer:

Step-by-step explanation:

Sin ∝  /2  / Cos ∝/2  -    Sinβ/2 / cosβ/2 / 1   -    Sin ∝/2/ Cos ∝/2. Cos β /2

= Tan∝/2  - tan β/2/ 1 -  tan∝ /2