Question

if sin theta = 48° write cos theta = ??​

Answer 1

Answer:

cos theta =(90-sin theta)

=90-48

=42°

Answer 2

Determine quadrant:

Since our angle is between 0 and 90 degrees, it is located in Quadrant I In the first quadrant, the values for sin, cos and tan are positive.

Determine angle type:

48 is an acute angle since it is less than

90°

sin(48) = 0.74314482483685

Write sin(48) in terms of cos

Since 48° is less than 90, we can

express this in terms of a cofunction

sin(0) = cos(90 - 0)

sin(48) = cos(90 - 48)

sin(48) = cos(42)