Answer:
cos(400)
Step-by-step explanation:
Useful things:
Cofunction identity: sin(x)=cos(90-x)
Sine and cosine have period of 360 degrees.
So sin(50)=cos(40) by cofunction identity.
Since cosine has period of 360 degrees then cos(40)=cos(360+40).
That simplifies to cos(400).
The expression equivalent to sin(50)º will be cos(400). the correct option is A.
The trigonometric functions in mathematics are real functions that connect the right-angled triangle's angle to the ratios of its two side lengths. They are extensively utilized in various geosciences, including navigation, and solid mechanics.
Trigonometry is the branch of mathematics that set up a relationship between the sides and angle of the right-angle triangles.
Cofunction identity: sin(x)=cos(90-x). Sine and cosine have periods of 360 degrees.
sin(50)=cos(40) by cofunction identity. Cosine has a period of 360 degrees then, the value of cos 40 is calculated as:-
cos(40)=cos(360+40).
Therefore, the expression equivalent to sin(50)º will be cos(400). the correct option is A.
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