Mathssmart Hindi's video: CBSE class10 8 4 Q 3 4 How to find values of expression

@CBSE class10 8.4 Q 3,4 त्रिकोणमितीय व्यंजकों के मान ज्ञात कैसे करें How to find values of expression

प्रश्नावली 8.4 3. मान निकालिये : (i) (〖sin〗^2⁡63+〖sin〗^2⁡27)/(〖cos〗^2⁡1 7^0+〖cos〗^2⁡〖73^0 〗 ) 〖 (ii) sin〗⁡〖25^0 cos⁡〖65^0 〗〗+cos⁡〖25^0 sin⁡〖65^0 〗〗 4. सही विकल्प चुनिए और अपने विकल्प की पुष्टि कीजिये : (i) 9 〖sec〗^2⁡A−9 〖tan〗^2⁡A बराबर है : (ii) (1+tan⁡θ+sec⁡θ )(1+cot⁡θ−cosec⁡θ ) बराबर है : (iii) (sec⁡A+tan⁡A )(1−sin⁡A ) बराबर है : (iv) (1+〖tan〗^2⁡A)/(1+〖cot〗^2⁡A ) बराबर है :

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Mathssmart Hindi's video: CBSE class10 8 4 Q 3 4 How to find values of expression

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