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ICSE Class 10 Answered

If(a+22deg.)and (4a+3deg.)are acute angles then find the degree measure of a satisfying sin(4a+3deg.)=cos(a+22deg.) deg. means degree If a and b are acute angles such that tan a =1/2,tan b=1/3 and tan(a+b)=tan a +tan b/1-tana*tanb then find tan(a+b)
Asked by kmondaldgms | 16 Aug, 2018, 11:13: AM
answered-by-expert Expert Answer
sin(4a+3)=cos(a+22)
sin(4a+3)=sin (90-a-22)
sin(4a+3)=sin (68-a)
4a+3=68-a
5a=65
a=13
 
pls post one question per query
Answered by Arun | 16 Aug, 2018, 01:57: PM

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