Question

sin A =2/5 ,then find tan and sec​

Answer 1

Answer:

tan A = 2/√21

sec A = 5/√21

Step-by-step explanation:

Sin A = 2/5 = p/h

We have,

p = 2, h = 5, b =?

We know,

p² + b² = h²

b² = h² - p²

b = √(h² - p²) = √(25 - 4) = √21

Hence,

tan A = p/b = 2/√21

sec A = h/b = 5/√21