14.cos(-1950^(@))

The value of (sin 1950^(@)-cos 1950^(@)) is equal to-

Evaluate the following: i) tan135^(@) ii) sec150^(@) iii) cot240^(@) iv) "cosec"1950^(@) v) cos(-1125^(@)) vi) tan(-1470^(@)) vii) tan1710^(@) viii) cot(-1770^(@))

Evaluate the following: i) tan135^(@) ii) sec150^(@) iii) cot240^(@) iv) "cosec"1950^(@) v) cos(-1125^(@)) vi) tan(-1470^(@)) vii) tan1710^(@) viii) cot(-1770^(@))

Simplify the following: i^(1947) + i^(1950)

The amount of heat required to raise the temperature of 100g of copper (sp.heat= 390J//kg^(@)C ) from 40^(@)C to 90^(@)C is 1950J //1950000J.

4 tables and 3 chairs, together, cost Rs. 2,250 and 3 tables and 4 chairs cost Rs. 1950. Find the cost of 2 chairs and 1 table.