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Dr Pratibha Gupta

My name is Dr.pratibha Gupta .I am a teacher . My experience has been in teaching for math and science subject for several years in Delhi.

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Chetna Gupta

5 months ago

in q3. why did you do (400 -280 )L as initial profit. what is 280L??

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Learning By Innovative way

3 months ago

280lakh id cost price that's why 400-280

LA &LB ae acute then show that LA=LB one acute an Give Cos A=Cos B Base(AD a (OD CD CoMMON BD Bc ADC ~ BDC .Css similarity chuon SO

evaluate Cot20 ( ) (1+9 (1-SiRO) Given Sint- (u. 113 ne13 113 2 AC 113 113 7 12 )3 113 64 6 4 13 q 64 113-49 113

cot = -tant A Sol L-H.s I- tan A 2 2 6+9 9 5 L. H s = RH's.

cthe value Co)C - SinAsine C) Sin A Cc Cos A Sin 6 3 A e +3 2 2,