Class-10 ncert math|Ex-8.2|question 1(ii)

Class-10 ncert math|Exercise-8.2|question no-1(ii)|2 tan² 45° + cos² 30° – sin² 60°

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#- Intro. to trigonometry-https://youtu.be/Cj7rn_BajzA
1-Ex-8.1,question.(1)=https://youtu.be/d9kl1Tzv6Jw
2- Ex-8.1, question 2= https://youtu.be/BfrrYi7_XJQ
3- Ex- 8.1, question no-3=https://youtu.be/MaVYv-cXUZM
5- Ex- 8.1, question no-5=
6- Ex-8.1, question no- 6=https://youtu.be/tz2Mug6J5kM
7- Ex-8.1,question no- 7=https://youtu.be/GvhFaTxDOTU
8- Ex- 8.1, question no- 8=https://youtu.be/IEuiafSpX3o
9- Ex- 8.1, question no- 9=https://youtu.be/z_BZ26gSie4
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trigonometry ratios for specific Angeles=