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If cos A =-3//5 , sin B=7//25 and 90^(@...

If ` cos A =-3//5 , sin B=7//25 and 90^(@) lt A lt 180^@,0^(@) lt B lt 90^(@) , "then " tan (A+B)=`

A

`3//4`

B

`-3//4`

C

`3//5`

D

`-3//5`

Text Solution

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The correct Answer is:
B
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DIPTI PUBLICATION ( AP EAMET)-TRIGONOMETRIC RATIOS AND IDENTITIES -EXERCISE 1 B ( COMPOUNDS ANGLES )
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  2. If B,A+B are acute angle , sin(A+B)=12/13, sin B=5/13 then sin A =

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  6. If cos alpha = -12//13 , cot beta = 24//7 , 90^(@) lt alpha lt 180^(@...

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  10. If cos (A-B)=3//5 and tan A tan B=2 , then which one of the following...

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  11. If cot theta = 8//15 and theta does not lie in the first quadrant , t...

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  12. If 2 tan A + cot A = tan B , then cot A +2 tan (A-B)=

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  15. If tan alpha , tan beta are the roots of the equation x^(2) + px+q=...

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  16. If an angle alpha is divided into two parts A and B such that A-B=x ...

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  17. In a DeltaPQR , if 3 sin P+4 cos Q=6 and 4 sin Q+3 cos P=1 , then the...

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  18. If tan beta = 2 sin alpha sin gamma " cosec "(alpha + gamma) , then ...

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  19. cos theta + cos (120^(@) + theta ) + cos (120^(@) - theta )=

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