sec4i*sin49+cos49*cosec41

Evaluate sec 50" sin 40° + cos 40" cosec 50° .

Find the value of (sec49^@)/(cosec41^@)

Without using trigonometric tables, show that (cos 70^(@))/( sin 20^(@)) + cos 49^(@) cosec41^(@) = 2

Without using trigonometric tables, evaluate : (i) (cos 53^@)/(sin 37^@) (ii) (tan68^@)/(cot 22^@) (iii) (sec49^@)/(cosec 41^@) (iv) (sin 30^@17')/(cos 59^@43')

The value of ((cos9 + sin81) (sec9+ cosec81))/(sin56.sec34 + cos25.cosec65) is: ((cos9 + sin81) (sec9+ cosec81))/(sin56.sec34 + cos25.cosec65) का मान ज्ञात करें |

The value of ((cos9^@ + sin81^@) (sec9^@+ cosec81^@))/(sin56^@.sec34^@ + cos25^@ cosec65^@) is: ((cos9^@ + sin81^@) (sec9^@+ cosec81^@))/(sin56^@.sec34^@ + cos25^@ cosec65^@) का मान है:

Evaluate the following expression: cosec"(sec"^(-1)(sqrt(41))/4 )

Evaluate the following expression: cosec"(sec"^(-1)(sqrt(41))/4 )

If y= sec^-1 [cosec x]+cosec^-1 [sec x]+sin^-1 [cos x]+ cos ^-1 [sin x] then (dy)/(dx) is equal to a)0 b)2 c)-2 d)-4

Solve the following/ निम्नलिखित को हल कीजिए : (sin 40^@)/(cos 50^@)+ (cosec 50^@)/(sec 40^@)-4 cos50^@ cosec40^@