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If 3 cos^2 A+6 Sin^2 A=3, 0^@leAle90^@, ...

If `3 cos^2 A+6 Sin^2 A=3, 0^@leAle90^@`, then the value of A is :
यदि `3 cos^2 A+6 Sin^2 A=3` तथा`0^@leAle90^@` है, तो A का मान ज्ञात करें |

A

`30^@`

B

`90^@`

C

`0^@`

D

`45^@`

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