Question

if sin ø=12/13, then find cos ø​

Answer 1

Step-by-step explanation:

sin thetha = 12/13,

We know that,

sin^2thetha+ cos^2thetha =1,

(12/13)^2+ cos^2thetha =1,

144/169+cos^2thetha=1,

cos^2thetha= -144/169,

cos thetha=√-144/169,

cos thetha= -12/13