Solve the equation sin(x° − 20°) = cos(42°) for x, where 0 < x < 90.

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15-06-2018
Mathematics

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Solve the equation sin(x° − 20°) = cos(42°) for x, where 0 < x < 90.

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tonb tonb · Answer 1 · 2018-06-15T16:38:14+02:00

tonb tonb

15-06-2018

The fact that cos(x)=sin(90°−x) can help us here.

The equation can be rewritten as:

sin(x° − 20°) = sin(90° - 42°) = sin(48°)

so x-20 = 48 => x=68°

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dhevannnyahhh dhevannnyahhh · Answer 2 · 2020-11-30T21:03:08+01:00

dhevannnyahhh dhevannnyahhh

30-11-2020

Answer:

B.) 68

Step-by-step explanation:

PLATO

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