Question

CosA=2/5 find the value 4+4tan^A

Answer 1

I hope this answer help you

Answer 2

COSA = 2/5 = B/H

B = 2 , H = 5 , P = ?

WE KNOW THAT,

(H)² = (B)² + (P)²

(P)² = (H)² - (B)²

= (5)² - (2)²

= 25-4 = 21

P² = 21

P = ✓21.

THEREFORE,

TANA = P/B = ✓21/2

4+4TANA = 4+4×✓21/2 = 4+4✓21/2 = 4+2✓21 Ans