Question

If tan A = -8/15, what is sin A and cos A.

Answer 1

Answer:

sinA=-8/17. cosA= 15/17

Answer 2

Answer:

sinA= -8/17 &cosA=15/17

Step-by-step explanation:

If tanA= -8/15&tanA=perpendicular(p)/base(b)

then,by using Pythagoras theorem

• Hypotenuse(h)=under root p sq. +b sq.

h=under root -8 sq. +15 sq.

h=under root64+225

h=under root 289

this is

h=17

now,

p=-8. b=15. & h=17

now,

sinA=p/h=-8/17

& cosA=b/h=15/17