one half, because the angles are complementary
Step-by-step explanation:
Complementary angles add up to 90°.
Hence, 42° is complementary to 48°
cosine of an angle =adjacent/hypotenuse
Sine of an angle= opposite/hypotenuse
Cos x= Sin (90-x)
Putting x=42°
Cos 42° =Sin (90-42)
Cos 42°=Sin 48° =1/2
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Complimentary angles :brainly.com/question/12946354
Keywords : cos, sin, complimentary ,angles
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