Question

If cosec A = 2, sec B = 1. Find A+B and A - B.
Give clear step by step explanation.​

Answer 1

Answer:

A+B = 30°

A-B = 30°

Step-by-step explanation:

given cosec A = 2

=> (1/sinA) = 2

=> sinA = 1/2

=> A = sin⁻¹(1/2)

=> A = 30°

also given than secB = 1

=> 1/cosB  = 1

=> cosB = 1

=> B = cos⁻¹(1)

=> B = 0°

=> A+B = 30° + 0° = 30°

&  A-B = 30°-0° = 30°