Question

find the value of cos 74°

Answer 1

HOLA

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( Cos 90 - a ) = Sin a

A = 74

( Cos 90 - 74 ) = Sin 16

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HOPE U UNDERSTAND ☺☺☺

Answer 2

Answer:

The value of cos 74° is 0.2756.

Step-by-step explanation:

The value of $\cos(74°)$ can be calculated by constructing an angle of $74°$with the x-axis, and then finding the coordinates of the corresponding point (0.2756, 0.9613) on the unit circle. The value of $\cos(74°)$is equal to the x-coordinate (0.2756).

∴ $cos 74° = 0.2756.$

By the same way we can find any degree value of cos.

For example,

The value of $\cos(73°)$can be calculated by constructing an angle of $73°$with the x-axis, and then finding the coordinates of the corresponding point (0.2924, 0.9563) on the unit circle. The value of $\cos(73°)$ is equal to the x-coordinate (0.2924).

∴ $cos 73° = 0.2924.$

The value of $\cos(72°)$

can be calculated by constructing an angle of 72° with the x-axis, and then finding the coordinates of the corresponding point (0.309, 0.9511) on the unit circle. The value of

$\cos(72°)$is equal to the x-coordinate (0.309).

∴ $cos 72° = 0.309$