Question

if tan theta=1/2 then cos theta=?​

Answer 1

Step-by-step explanation:

From the figure,

tan Ф = oppositesideadjacentside = 23

sin Ф = oppositesidehypotenuse

Compute first for the hypotenuse using the Pythagorean Theorem,

h = 13−−√

SO,

sin Ф = 213√

Answer 2

Answer:

Tan=P/B

P=1

B=2

H^2=P^2+B^2(Pythagoras theoram)

1^2+2^2=H^2

1+4=H^2

H^2=5

H=√5

Now,cos=B/H

=2/√5 Answer...........