Download Lagu Prove that: `1/(cos(x-a)cos(x-b))=(tan(x-b)-\"tan\"(x-a))/(sin(a-b))` MP3 & MP4
| 19 September 2017 | Doubtnut | 03:06 |
Prove that: `1/(cos(x-a)cos(x-b))=(tan(x-b)-\"tan\"(x-a))/(sin(a-b))`
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