Question

if cosA =3/5,find value of (in pic)​

Answer 1

Step-by-step explanation:

cos@=3/5 so 3= b and 5=h

therefore we find hp

p=root5^2-3^2

=root25-9

=root16

=4

p=4

so

(sin@-1/tan@)/2tan@

sin=p/h and tan= p/b

( 4/5-1/4/3)/2×4/3

(4×4-4×5)/20/8/3

(16-20)3/20×8

-4×3/160

-12/160

=-6/80

=-3/40

I hope it helps you

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