Question

if 3tan²A=4 check whether sin²A-cos²A​

Answer 1

Answer:

i hope you understood okkk

Answer 2

Step-by-step explanation:

3tan²A=4,

tan²A=4/3

tan =opposite /adjacent=4/3

using pythagoras theorem

(hyp)²=(side)²+(side)²

(hyp)²=(4)²+(3)²

(hyp)²=16+9=25

hyp=root 25=5

sin²= 4/5,cos²=3/5

sin²-cos²=4/5-3/5=4-3/5

=-1/5