Question

if 3x is equal to sec theta,3/x is equal to tan theta then [x^2(-1/x^2)] is equal to ​

Answer 1

Answer:

The value of 9(x 2− x 21)=1

Step-by-step explanation:

3x=sec\theta ---(1)3x=secθ−−−(1)

x3=tanθ−−(2)

Thevalueof9(x 2− x 21)

=9x 2− x 29

=(3x) 2 −( x3)

2=(secθ) 2

−(tanθ) 2=sec 2

θ−tan 2θ=1

By Trigonometric identify

2 θ−tan 2 θ=1

Therefore,

The value(x 2 − x 21)=1

I hope it will help you