Question

This question is from chapter some applications related to trignometry of 10th class. questions of this chapter during solving these questions how do we knew that which side will come on denominator and numerator

Answer 1

the side which is common in both the triangles will come at the denominator

Answer 2

if u know trigonometric ratios, y cant u find it

first of all u need to know the following formulae,

sinϴ=opposite side/hypotenuse side

cosϴ=adjacent side/hypotenuse side

tanϴ=opposite side/adjacent side

cotϴ=adjacent side/opposite side

secϴ=hypotenuse side/adjacent side

cosecϴ=hypotenuse side/opposite side