Find the values of the following: `t a n 15^0` ii. `t a n 75^0`

Find the values of the following: tan15^(0) ij.tan75^(0)

Find the values of the following: sin75^0 (ii) cos75^0 (iii) sin15^0 (iv) cos15^0

Find the values of the following: sin75^0 (ii) cos75^0 (iii) sin15^0 (iv) cos15^0

Find the values of the following trigonometric ratios. (1) cos e c390^0 (ii) cot570^0 (iii) t a n480^0 (iv) cos270^0 (v) t a n(19pi)/3 (vi) s in((-11pi)/3) (vii) cot(-15pi)/4

Find the values of the following trigonometric ratios. cos e c390^0 (ii) cot570^0 (iii) t a n480^0 (iv) cos270^0 (v) t a n(19pi)/3 (vi) s in((-11pi)/3) (vii) cot(-15pi)/4

Find the sum of the following series: 0. 5+0. 55+0. 555+ to\ n\ t e r m s

Find the sum of the following series: 0. 6+0. 66+0. 666 to\ n\ t e r m s

Find the equation of the straight lines passing through the following pair of point: (0,-a)a n d\ (a t_2,\ a//t_2)

Find the sum of the first 15 terms of each of the following sequences having n t h term as (i) a_n=3+4n (ii) b_n=5+2n

Find the sum of the first 15 terms of each of the following sequences having n t h term as (i) x_n=6-n (ii) y_n=9-5n