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Four numbers n1,n2,n3andn4 are given as ...

Four numbers `n_1,n_2,n_3andn_4` are given as `n_1=sin15^@-cos15^@,n_2=cos93^@+sin93^@,n_3=tan27^@-cot27^@,n_4=cot127^@+tan127^@`,Then

A

`n_1lt0`

B

`n_2lt0`

C

`n_3lt0`

D

`n_4lt0`

Text Solution

Verified by Experts

The correct Answer is:
A, C, D
`n_1=sin15^@-cos15^@lt-ve" "(cos15^@gtsin15^@)`
`n_2=cos93^@+sin93^@`
`=-sin3^@+cos3@gt0" "(cos3^@gtsin3^@)`
`n_3=tan27^@-cot27^@lt0" "(tan27^@ltcot27@)`
`n_4=cot127^@+tan127^@lt0" "(tan127^@,cot127^@lt0)`.
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