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Tan A/1-cot A+ cot A/1-tanA=1+secAcosA...prove

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Tan A/1-cot A+ cot A/1-tanA=1+secAcosA...prove

Posted by Maggie Kandpal 7 years, 11 months ago

CBSE > Class 10 > Mathematics

2 answers

Maggie Kandpal 7 years, 11 months ago

Thanks

1Thank You

Simran Kaur 7 years, 11 months ago

sin/cos/1-cos/sin +cos/sin/1-sin/cos sin/cos /sin-cos/sin + cos/sin/cos-sin/ cos sin/cos×sin/sin-cos + cos/sin×cos/cos-sin sin2 /sin(sin-cos) + cos2/sin( cos-sin) sin2/sin(sin-cos)-- cos2/sin( sin-cos) sin3--cos3/ sin(sin-cos) ( a3-b3)= (a-b) (a2+b2+ab (sin--cos) (sin2+cos2+sin×cos)/sin(sin-cos) sin2+cos2+sin×cos/sin ( sin2+cos2 =1) 1+ sin×cos / sin 1/sin/cos + sin /sin ( 1/sin = cosec &1 / cos= secA) cosecA sec A + 1 1+secAcosecA = r.h.s hence proved.

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