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The value of (sin43^(@))/(cos47^(@))+(co...

The value of `(sin43^(@))/(cos47^(@))+(cos19^(@))/(sin71^(@))-8cos^(2)60^(@)`

A

0

B

1

C

2

D

`-1`

लिखित उत्तर

Verified by Experts

The correct Answer is:
a
`(sin43^(@))/(cos47^(@))+(cos19^(@))/(sin71^(@))-8cos^(2)60^(@)`
`rArr1+1 -(8xx((1)/(2))^(2))`
`sinA=cosB ` (if`A+B=90^(@)`)
`[(sinA)/(cosB)=1"or"(cosB)/(sinA)=1]`
`rArr2-2=0`
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