Question

if sin a=1/2 then find the value of cos a​

Answer 1

Answer:

cos a is root 3 /2

Step-by-step explanation:

sin a = 1/2 given

1/2=p/h

By Pythagoras theorem

H^2=P^2+B^2

on solving we get the value of B = √ 3

cos a =b/h

cos a= √3/2

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Answer 2

Answer:

sin a =1/2, P/H therefore P=1k,H=2k

By using Pythagoras theorem

we get B=2k

therefore

cos a =2k/2k=1