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Gekata [30.6K]
3 years ago
13

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

Mathematics
1 answer:
8090 [49]3 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

Learn More

Complimentary angles :brainly.com/question/12946354

Keywords : cos, sin, complimentary ,angles

#LearnwithBrainly

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