Видео с ютуба Sin65
Prove that : sin 25°. sin 65° = cos 25°. cos 65°
The value of (𝒔𝒊𝒏(𝟕𝟖+𝛉)−𝐜𝐨𝐬(𝟏𝟐−𝛉)+𝐭𝐚𝐧^𝟐 𝟕𝟎°−𝐜𝐨𝐬𝐞𝐜^𝟐 𝟐𝟎°)/(𝐬𝐢𝐧𝟐𝟓°𝐜𝐨𝐬𝟔𝟓°+𝐜𝐨𝐬𝟐𝟓°𝐬𝐢𝐧𝟔𝟓°) is: 2-1-2 0
![Given that [ sin65^∘ ≈0.9063, cos65^∘ ≈0.4226; tan… ]](https://image.4k-video.ru/id-video/2E3J5FzWIBs)
Given that [ sin65^∘ ≈0.9063, cos65^∘ ≈0.4226; tan… ]
Wartość :(°°°°°°°°+°°°°°°°)/(°°°°−°°°) wynosi: -1 0 1 2
sin25°sin65° - cos25°cos65° का मान ज्ञात कीजिए #viralvideo #SSC #CGL-2023 #maths #education
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