1. From the figure, the value of sin2 A + cos2 A is   (a/b + c/b)2   1   b/a + c/b   a/b + c/b   (b/a + c/b)2   Hint Half-n-half Clue   2. From the figure given on the right, the value of sin A + cos A is   (b + c)/a   (a + c)/b   (a + b)/c   (a - b)/b   (a + b + c)/b   Half-n-half Clue   3. For the figure given on the right, which of the following relationships is true :   tan A = a / b   cot A = c / a   cos A = b / c   sin A = a / c   sec A = b / a   Half-n-half Clue   4. Which of the following relationships is true:   sec A cot A = 1   sec A - cos A = 1   sin A + cosec A = 1   sin A cot A = 1   cos A sec A = 1   Half-n-half Clue   5. From the figure, the value of cot C + cosec C is   c/a + b/c   (c + b)/a   (a + c)/b   a/c + c/b   (a + b)/c   Half-n-half Clue   6. tan A / sin A =   1 / sin A   cos A   sin A   sec A   cosec A   Half-n-half Clue   7. From the figure, the value of cosec A + cot A is   b/(a + c)   (a + c)/b   a/(b + c)   (b + c)/a   (a + b)/c   Half-n-half Clue