The value of (2 (sin2 theta-2 cos^(2)the...

The value of `(2 (sin2 theta-2 cos^(2)theta-1))/(cos theta-sin theta-cos 3 theta +sin 3 theta)=`

A

`cos theta`

B

`sec theta`

C

`cosec theta`

D

`sin theta`

Text Solution

Verified by Experts

The correct Answer is:

C

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4 sin 5 theta cos 3 theta sin 2 theta

A

`1+ cos 4 theta + cos 6 theta -cos 10 theta `

B

`1- cos 4 theta + cos 6 theta - cos 10 theta `

C

`1- cos 4 theta + cos 6 theta + cos 10 theta `

D

`1+ cos 4 theta + cos 6 theta + cos 10 theta `

( cos 3 theta - sin 3 theta )/( cos theta+ sin theta ) =

A

`1+2 sin 2 theta `

B

`1- 2 sin2 theta `

C

`1+ 2 sin 2 theta `

D

`1-2 cos 2 theta `

If sin 2 theta+cos theta =0 then theta=

A

`2 n pi -(pi)/6, n in Z`

B

`2npi+(pi)/3, n in Z`

C

`(2npi)/3-(pi)/6, n in Z`

D

`(2npi)/3+(pi)/4, n in Z`

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