Find `A`

Find the value of: sin 75° . Find the value of: tan 15° . Find: sin 75° . Find: tan 15° . Find the values of trigonometric functions.

Find the product of the following reaction Find out 'B' :

Evaluate : Find the value of ( 7/4 - 8/5 )

Find the HCF of 210 and 392. Hence, find their LCM.

Find the mean deviation about the median for the data (i) Find median. (ii) Hence find mean deviation from the median.