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cosA=1/2^-1.find the value of A

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Sagot :

oladayoademosu

Answer:

A = 60°

Explanation:

Since cosA = 1/2, to find the value of A, we take the inverse cosine of both sides.

So, cosA = 1/2

So, taking inverse cosine of both sides, we have

cos⁻¹cosA = cos⁻¹(1/2)

So, A = cos⁻¹(1/2)

Using our calculator, taking cosine inverse of one-half, we find that, cos⁻¹(1/2) = 60°

Since cos⁻¹(1/2) = 60° and A = cos⁻¹(1/2)

This implies that A = 60°

So, we find that the value of A is 60°.

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