If 0°<0<90° and sin0=12/13, find cos0 using trigonometric identities. • 12/5
• 5/12
• 12/13
• 5/13

here's the solution,

we know :

So,

so.. let the perpendicular be 12x and hypotenuse be 13x

now,

by applying pythagoras theorem,

where,

So,

so,

hope it helps !!

step-by-step explanation:

first, eliminate the parenthesis:

3

x

+

2

−

4

x

second, group like terms:

3

x

−

4

x

+

2

third, combine like terms:

(

3

−

4

)

x

+

2

→

−

1

x

+

2

→

−

x

+

2

it would rotate about 180 degrees.