Question

if √3 tanA -1=0,find the value of sin^2 - cos^2​

Answer 1

Step-by-step explanation:

√3 tanA -1=0

tanA = 1/√3

therefore........A = 30°

sin^2(A ) - cos^2(A)

= (1/2)^2 - (√3/2)^2

= 1/4 - 3/4

= -1/2

Answer 2

Answer:

$\sqrt{3 } tan a = 1$

tan a =1/3underoot

tan a=tan 30. [ 1/underoot3=tan 30]

a=30

sin^2 A-cos^2A

(1/2)^2-(underoot3/4)^2

1/4-3/16

4/16-3/16

1/16