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If 1/(sin^(2)theta)-1/(cos^(2) theta)-1/...

If `1/(sin^(2)theta)-1/(cos^(2) theta)-1/(tan^(2)theta)-1/(cot^(2)theta)-1/(sec^(2)theta)-1/(cosec^(2)theta)=-3` then find the value of `theta`.

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`1/(sin^(2)theta)-1/(cos^(2)theta)-1/(tan^(2)theta)-1/(cot^(2)theta)-1/(sec^(2)theta)-1/(cosec^(2)theta)=-3`
`:.cosec^(2) theta-sec^(2)theta-cot^(2)theta-tan^(2)theta-cos^(2) theta-sin^(2) theta)=-3`
`:.(cosec^(2)-cot^(2)thet)-(cos^(2) theta+sin^(2)theta)-sec^(2)theta-tan^(2)theta=-3`
`:.1-1-[1+tan^(2)theta]-tan^(2)theta=-3` ...........`{:[( :' cosec^(2)theta=1+cot^(2) theta),(sin^(2)theta=cos^(2)theta=1),(sec^(2)theta=1+tan^(2)theta)]:}`
`:.-1-tan^(2)theta-tan^(2)theta=-3`
`:.-1-2tan^(2)theta=-3`
`:.-2tan^(2)theta=-3+1`
`:.-2tan^(2)theta=-2`
`:.tan^(2) theta=(-2)/(-2)`
`:.tan^(2)theta=1`
`:.tan theta=1`
We know `tan 45^(@)=1`
`:.theta=45^(@)`
The value of `theta` is `45^(@)`
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NAVNEET PUBLICATION - MAHARASHTRA BOARD-TRIGONOMETRY-ASSIGNMENT
  1. Solve the following activity and find the value of 6 tan^(2)theta-6/(c...

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  2. Proove: (sin^(2)theta)/(cos theta)+cos theta=sec theta

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  3. Prove that sqrt[[1-sintheta]/[1+sintheta]]=sectheta-tantheta

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  4. Complete the following activity by filling the boxes sin^(2) theta+c...

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  5. Prove that sec theta+tan theta=(cos theta)/(1-sin theta)

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  6. Prove : cot^(2) theta-tan^(2)theta=cosec^(2)theta-sec^(2)theta

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  7. If tan theta=1, then (sin theta+cos theta)/(sec theta+cosec theta)=

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  8. Prove :(sec theta-cos theta)(cot theta+tan theta)=tan .sec theta

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  9. Prove cot theta+tan theta=(cosec theta)(sec theta) by completing the f...

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  10. Prove: (tan theta)/(sec theta-1)=(tan theta+sec theta+1)/(tan theta+se...

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  11. When observer at a distance of 12m from a tree looks at the top of the...

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  12. From the top of a lighthouse, an observer looking at a boat makes an ...

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  13. If 1/(sin^(2)theta)-1/(cos^(2) theta)-1/(tan^(2)theta)-1/(cot^(2)theta...

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  14. If sec theta=13/12, find the values of other trigonometric ratios.

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  15. If sqrt(3) tan theta=3 sin theta and theta!=0 then find the value of s...

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  16. Prove: sec^4A(1-sin^4A)-2tan^2A=1

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  17. Prove : 2(sin^(6)theta+cos^(6)theta)-3(sin^(4)theta+cos^(4)theta)+1=0.

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  18. Two persons on the same side of a tall building notice the angle of el...

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  19. A ladder on the platform of a firebrigade van can be elevated at an an...

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  20. While landing at an airport, a pilot made an angle of derpession of 20...

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