RaushanYadav RaushanYadav

23-02-2021
Mathematics

contestada

sec 5A = cosec 7A, prove that A = 7.5°

Respuesta :

jimrgrant1 jimrgrant1

23-02-2021

Answer:

see explanation

Step-by-step explanation:

Using the cofunction identity

sec(90 - x)° = cscx° , then

7A = 90 - 5A ( add 5A to both sides )

12A = 90° ( divide both sides by 12 )

A = 7.5°

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