Mathematics, 03.08.2019 02:30 rachelcondon8860

Explain why sin 20=0.342 and the cos 70= 0.342 best explain answer= brainliest

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Answer from: SK3653

To solve this problem, let's go back to the basic unit circle.

Refer to the diagram. We know that the vertical component of the triangles is simply the sine of the angle since we can recall that sine = opposite/hypotenuse (from SOHCAHTOA) and the hypotenuse is equal to the radius of the UNIT circle which is equal to 1. Correspondingly, the horizontal component of the triangle will be the cosine of the angle.

The figure on the left shows the 20-degree angle. We know that the side opposite it measures 0.342. Now, let's look at the figure on the right.

Note that the angle on the topmost would be equal to 20 degrees since the angles below are 70 and 90 degrees respectively. Since it's also equal to 20 degrees, then we know that the side opposite it measures 0.342 too! This side also happened to be the cosine of 70. This is the reason why the sine of 20 is equal to the cosine of 70.

Generally speaking, this reasoning will work for ANY pairs of complementary angles. The sine of an angle is always equal to the cosine of its complementary angle.
Explain why sin 20=0.342 and the cos 70= 0.342 best explain answer= brainliest

Explain why sin 20=0.342 and the cos 70= 0.342 best explain answer= brainliest

Answer from: Quest

exa:

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3+11

step-by-step explanation:

from this example, we can see that subtracting with integers is the same as adding the opposite. we can solve using a number line or by using the saying "keep, change, change" to us solve. it is important to remember that we can subtract a negative and end up with a larger number than we started with.

Answer from: Quest

you forgot the options, but i found them anyways, the correct answer is "john wilson believes that words and actions based on the intellect are superior to those based on emotions".

john wilson is depicted as an extremely intelligent man. the point of the excerpt is to make a sort of distinction between emotional and rational intelligence. he happens to have both attributes, but he clearly favors his intellectual gifts. at the same time, because of his religious background, he's a little bit conflicted with this and it makes him ashamed.

hope this !

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Explain why sin 20=0.342 and the cos 70= 0.342 best explain answer= brainliest...

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