cosec (270^(@)- theta) ..... | CLASS 11 | प्रश्न पत्र 2022 सेट-1 | MATHS | Doubtnut

cosec^(2)theta-cot^(2)theta-1

cosec^(2)theta=1+cot^(2)theta

cosec^2 theta - cot^2 theta = 1 +…..

Prove that: ("cosec" theta + cot theta)/("cosec" theta - cot theta) = ("cosec" theta + cot theta )^(2) = 1 + 2 cot^(2) theta + 2 "cosec" theta cot theta .

Prove that (i) ("cosec"^(2) theta-1 ) tan^(2) theta =1 " " (ii) (sec^(2) theta -1)(1- "cosec"^(2) theta )=-1

If 1/(cosec theta-1)+1/(cosec theta+1) =2 sec theta, 0^@ यदि 1/(cosec theta-1)+1/(cosec theta+1) =2 sec theta, 0^@< theta < 90^@ , है, तो (cot theta+cos theta) का मान क्या होगा ?

If (1/(1+cosec theta ) - 1/(1-cosec theta ))cos theta= 2 , 0^circ lt theta lt 90^circ , then the value of sin^(2) theta + cot^(2) theta + sec^(2) theta is: यदि (1/(1+cosec theta ) - 1/(1-cosec theta ))cos theta= 2 , 0^circ lt theta lt 90^circ , है,तो sin^(2) theta + cot^(2) theta + sec^(2) theta का मान हैः

1+cottheta="cosec"theta

If (1/(1+ "cosec" theta)-1/(1-"cosec" theta))costheta =2,0^@ lt theta lt 90^@ then the value of sin^2 theta + cot^2 theta + sec^2 theta is :