Question

19) If 4seco = 5, find the value of :
sino -2cos e
tano - coto​

Answer 1

seco =5/4

seco =hypotenuse/base

Hypo=5and base =4

By pythagoras theorem

25-16=(perpendicular)^2

Perpendicular=3

Now sino=p/h

Sino=3/5

Cose=b/h

Cose =4/5

Tano= p/b

tano=3/4

Coto =b/p

Coto=4/3

now value

3/5-2*4/5

3/5