`cos^(2)20^(@)+cos^(2)70^(@)` का मान ज्ञात करो ।

" (8) "int(sin^(2)x-cos^(2)x)/(sin^(2)x cos^(2)x)dx" का मान ज्ञात कीजिए। "

cos^(2)20^(@)+cos^(2)70^(@) is equal to :

The value of (sin^2 52^@+2+sin^2 38^@)/(4cos^2 43^@-5+4cos^2 47^@) is : (sin^2 52^@+2+sin^2 38^@)/(4cos^2 43^@-5+4cos^2 47^@) का मान ज्ञात करें:

(sin^(2) 20^(@) + sin^(2) 70^(@))/(cos^(2) 20^(@) + cos^(2) 70^(@)) + [ (sin (90^(@) - theta).sin theta)/(tan theta) + (cos (90^(@) - theta).cos theta)/(cot theta) ] .

cos^2 20^@+cos^2 70^2 = 1 .

The value of sin^2 38^@-cos^2 52^@ is : sin^2 38^@-cos^2 52^@ का मान ज्ञात करें ।

Find the value of (Cos30^@-sin30^@)/ (Sin60^@+Cos60^@) (Cos30^@-sin30^@)/ (Sin60^@+Cos60^@) का मान ज्ञात करें ।

The value of sin^2 64^@+cos64^@ sin26^@+2cos43^@ cosec47^@ is : sin^2 64^@+cos64^@ sin26^@+2cos43^@ cosec47^@ का मान ज्ञात करें ।

The value of [(sin^2 24^@+sin^2 66^@)/ (cos^2 24^@+cos^2 66^@)+sin^2 61^@ + cos61^@.sin29^@] is: / [(sin^2 24^@+sin^2 66^@)/ (cos^2 24^@+cos^2 66^@)+sin^2 61^@ + cos61^@.sin29^@] का मान ज्ञात करें |

The value of (sin^2 30^@+ cos^2 60^@+ sec 45^@.sin^2 45^@)/(sec60^@+ cosec 30^@) is : (sin^2 30^@+ cos^2 60^@+ sec 45^@.sin^2 45^@)/ (sec60^@+ cosec 30^@) का मान ज्ञात करें: