Question

If sec theta =2x and y tan theta =2, then the value of 2 (x^2 - 1/y^2) is
A. 1
B. 1/2
C 1/3
4 1/4​

Answer 1

Answer:

B) 1/2

Step-by-step explanation:

See the pic. You will understand.

Answer 2

Step-by-step explanation:

x^2=sec^2 theta/4...1/y^2=tan^2 theta/4

so, 2(x^2-1/y^2)= 2(sec^2 theta/4-tan^2 theta/4 )

=1/2