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Question
`(1- tan^2 45°)/(1+tan^2 45°)` = ______
Options
tan 90°
1
sin 45°
0
Solution
`(1- tan^2 45°)/(1+tan^2 45°)` = 0
Explanation:
`(1- tan^2 45°)/(1+tan^2 45°) `
= `(1-(1)^2)/(1+(1)^2)`
= `(1-1)/(1+1)`
= `0/2`
= 0
Hence, 0 is correct.
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