Math, asked by nishant9162153240, 1 month ago

1 यदि +xy + y = 21 और . + ry + y = 7 है, तो मान ज्ञात करें- का

Answers

Answered by zatlikarti

Step-by-step explanation:

73. Answer. A. Solution. x:y 7:3 ∴xy+y2x2-y2=21+949-9=3040=34 ... यदि y=1-cos2x1+cos2x है तो dydx का मान ज्ञात कीजिए ...

Missing: ry + ‎| Must include: ry +

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