Question

If cosx is approximately 0.9511, what is the measurement of x to the nearest degree? Approximately, what is the sine of the angle that is complementary to x?

Answer 1

Answer: 18 degrees and 0.9511

Explanation:

18°; 0.9511

Cos-1(0.9511) = 18°

The complement of 18° is 72°. The sine of 72° is the cos of 18°, which is 0.9511.

Answer 2

Using the calculator angle whose cos is 0.9511 is 18 degrees

Sine of the complementary angle = 0.9511 also

Explanation:

The sine of the complementary angle( which is 90-18 = 72 degrees) is same value 0.9511