sec70^(ln)sin20^(0)+cos20^(@)csc70^(0)=2

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

sec70^(@)sin20^(@)+cos20^(@)"cosec"70^(@)=?

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

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

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

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 sec70^@sin20^@+cos20^@cosec70^@ is

prove that sin10^(0)+sin20^(0)+sin40^(@)+sin50^(0)=sin70^(0)+sin80^(@)

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

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