Question

If sinC = 12/13, what will be the value of cosC

Answer 1

Step-by-step explanation:

sinc= opp/hyp

=12/13

cosc=adj/hyp=x

in a triangle abc

(hyp)^2=(opp)^2+( adj)^2

(13k)^2=(12k)^2+( x)^2

169k^2-144k^2=x^2

25k^2=x^2

5k=x

cosc=5k/13k

cosc=5/13