2 years ago

If the cos 42° = one half, then the sin 48° = _____.

Mathematics

1 answer:

8090 [49]2 years ago

5 0

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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