The value of `sec^(4)A(1-sin^(4)A)-2tan^(2)A` is `sec^(4)A(1-sin^(4)`) (का मान है )

Options

A. `(1)/(2)`
B. 0
C. 2
D. 1

Answer

d

Explanation

According to the qeustion,
`rArr Sec^(4)A(1-sin^(4)A)-2tan^(2)A`
Put `A=45^(@)`
`rArrSec^(4)45^(@)(1-sin^(4)45^(@))-2tan^(2)45^(@)`
`rArr4(1-(1)/(4))-2`
`rArr4xx(3)/(4)-2`
`rArr3-2`
`rArr3-2`
`rArr1`