Question

(3 cos²60° + 2 cot²30° – 5 sin²45°) = ?

पर्याय

• 1

• 4

• `17/4`

• `13/6`

Answer 1

`bb(17/4)`

Explanation:

Given expression = `{3 xx (1/2)^2 + 2 xx (sqrt(3))^2 - 5 xx (1/sqrt(2))^2}`

= `(3/4 + 6 - 5/2)`

= `17/4`