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If Pseca + qtana =1 and p 2 sec 2 a - q 2 tan 2 a =5 then find the value of (9p -2 - 4q -2 ).
If Pseca + qtana =1 and p2sec2a - q2tan2a =5 then find the value of (9p-2 - 4q-2).

```
2 years ago

Susmita
425 Points
```							pseca+qtana=1Or,pseca=1-qtanaTake whole square on both side.p2sec2a-q2tan2a=1-2qtanaor,5=1-2qtanaOr,-2qtana=4Or,qtana=-2Or,q=-2/tanaPut qtana=-2 in 1st equation.pseca=1-qtana=3Or,p=3/secaSo 9/p2-4/q2=sec2a-tan2a=1If it helps please approve.thanks.
```
2 years ago
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• 31 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions