If the angles of triangles ABC are in A....

If the angles of triangles ABC are in A.P. and b: c= ` sqrt3 : sqrt2 " then " angle a = `

A

` 75 ^(@) `

B

` 45 ^(@) `

C

` 30 ^(@) `

D

` 60 ^(@) `

Text Solution

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The correct Answer is:

A

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Knowledge Check

In triangle ABC are in A.P and b:c= sqrt(3): sqrt(2) , then

A

`sin (2C-A) = sin(B//4)`

B

`sin(A-C)=sin(B//4)`

C

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D

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In a triangle ABC, if A,B, C are in A.P and b:c = sqrt3:sqrt2 , then

A

`sin (2C-A)=sin (B//4)`

B

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C

`sin (A+C)=cos 2R`

D

`cos (A-C)=sin (B//2)`

If the angles of a triangle are in A.P., a=2 c= 4 , then b=

A

` 2sqrt3`

B

` sqrt(21) `

C

` 8`

D

`14`

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