सिद्ध कीजिए की `sec70^(@)sin20^(@)+cos20^(@)cosec 70^(@)=2.`

sec70^(@)sin20^(@)+cos20^(@)cosec70^(@)=2

sec 70^@.sin 20^@ - cos70^@.cosec 20^@

Evalute (g) sec70^(@)sin20^(@)-cos70^(@)cosec20^(@)

Without using trigonometric tables, prove that sec70^(@)sin 20^(@) + cos 20^(@) cosec 70^(@)=2 .

Evaluate : (i) cosec 82^(@)-sec8^(@) (ii) sec 70^(@)sin 20^(@)+cos 20^(@)cosec 70^(@)

The value of sec70^@sin20^@+cos20^@cosec70^@ is

Prove that: (i) cos55^(@)sin 35^(@)+sin 55^(@)cos 35^(@)=1 (ii) (tan 72^(@))/(cot 18^(@))-(cot 72^(@))/(tan18^(@))=0 (iii) sec70^(@)sin 20^(@)+cosec 70^(@)cos 20^(@)=2

The value of sec 70^@.sin 20^@ + cos 20^@.cosec 70^@ =………..

The value of sec70^@*sin20^@+cos20^@*cosec70^@ = ……………

Without using Trigonometric Tables evaluate the following :- sec70^@sin20^@-cos20^@cosec70^@ .