Question

If cos x equal to 2 upon 3 then tan x equals to

Answer 1

Answer:

√5/2

Step-by-step explanation:

cos x= 2/3

cos x= B/H

let

B= 2k and H= 3k

then P =( 3k)^2- (2k)^2

P^2= 9k^2 - 4k^2

P^2 = 5 k^2== p = √5 k

tan x = P/B

= √5 k / 2k

= √5/2