Question

if tan A=5/7find the value of （sinA+cosA）.sec A​

Answer 1

Answer:

tanA = 5/12 = p/b

h = √12²+ 5²

h = √144+ 25

h = √169

h = 13

now , sinA = p/h = 5/13 ---------1)

cosA = b/h = 12/13 ---------2)

secA = h/b = 13/12

now, putting these value on

(sinA + cosA )secA

=>( 5/13 + 12/13 )13/12

=> 12+5/13 ×13/12

=> 17/13×13/12

=> 17/12 Answer