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Question

If A,B are acute angles, sinA=45,tanB=512 then sin(A+B)=

A
3665
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B
6556
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C
6563
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D
6365
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Solution

The correct option is D 6365
REF.Image
sinA=4/5,cosA=3/5
sinB=5/13,cosB=12/13
sin(A+B)=sinAcosB+cosAsinB
=45.1213+35.513
=48+1565=6365
=(D)

1085945_1144115_ans_da8ac3923a3c4a10bd343a010997886d.jpeg

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