Question

10 cosec A-10 cotA=
class 10 main question​

Answer 1

Step-by-step explanation:

Taking the L.H.S,

(1 – cos2 A) cosec2 A

= (sin2 A) cosec2 A [∵ sin2 A + cos2 A = 1 ⇒1 – sin2 A = cos2 A]

= 12

= 1 = R.H.S

– Hence Proved

Answer 2

Step-by-step explanation:

Given that : 10 cosecc^2 A- 10 cot^2 A

=>10 ( cosec^2 A- cot^2 A)

we know that cosec ^2 A - cot ^2 A =1

so Given becomes 10(1)=10

therefore , 10cosec^2 A- 10 cot ^2 A=10