Which inverse trigonometric function will NOT determine the measurement of angle A? sin-1 (0.6) cos-1 (1.25) tan-1 (0.75)

Question

Mathematics

Taylor Lambert

14 March, 09:17

Which inverse trigonometric function will NOT determine the measurement of angle A? sin-1 (0.6) cos-1 (1.25) tan-1 (0.75)

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Answers (2)

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Cheeky · Answer 1

cos-1 (1.25)

Step-by-step explanation:

cos-1 (also call arccos) is the inverse function of the cosine function. If a cosine is given, cos-1 determine which angle gives that cosine. However, cosine function has a range between - 1 and 1, so, it is impossible that a cosine of a given angle is equal to 1.25, and therefore, cos-1 (1.25) doesn't exist.

Selena Mack · Answer 2

Answer: tan-1 (0.75)