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A positive acute angle is divided into t...

A positive acute angle is divided into two parts whose tangents are `1/2 and 1/3.` Then the angle is

A

`pi/4`

B

`pi/5`

C

`pi/3`

D

`pi/6`

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The correct Answer is:
A
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LUCENT PUBLICATION-ADVANCED TRIGONOMETRIC IDENTITIES-EXERCISE 13A
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  6. The value of cos 15^(@) - sin 15^(@) is

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  8. 3 (sinx - cosx)^(4) + 6 (sinx + cosx)^(2) + 4(sin^(6)x + cos^(6)x) =

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  10. If cos alpha + cos beta = 0 = sin alpha + sin beta, then value of cos...

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  14. The value of cos 20^(@) + Cos 100^(@) + cos 140^(@) is

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  15. If (-pi)/(2) < theta < (pi)/(2) " and " theta ne pm (pi)/(4), then th...

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  16. If sin theta =3 sin ( theta + 2 alpha), then the value of tan (theta...

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  17. If x=ycos""(2pi)/(3)=zcos""(4pi)/(3), then xy+yz+zx is equal to

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