Question

If sin Q=3/5 then , cost Q=?
a. 5/4
b. 4/5
c. 5/3
d. 3/5​

Answer 1

Answer:

4/5 as sin is p/h =3/5

and cos is b/h =25-9 √16=4

so b/h is 4/5

Answer 2

Answer:

b. 4/5

Step-by-step explanation:

given,

sinQ=3/5=opp/hyp

by Pythagoras theorem

h^2=s^2+s^2

5^2=3^2+s^2

s^2=5^2+3^2

s^2=25-9

s^2=16

s=√16

s=4

adj.side= 4cm

cos Q=adj/hyp

cosQ=4/5

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