if sin(2a)=4sin2b,show that 5tan(a-b)=3tan(a+b)
anil rahoria , 12 Years ago
Grade 12
Trigonometry> t...
1 Answers
Sunil Raikwar
Last Activity: 11 Years ago
sin2a/sin4b=4
sin2a+sin2b/sin2a-sin2b=4+1/4-1[by componendo & dividendo]
2sin(a+b)cos(a-b)/2cos(a+b)sin(a-b)=5/3
tan(a+b)/tan(a-b)=5/3
5tan(a-b)=3tan(a+b)
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Sunil Raikwar
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