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Q: By using trigonometric identities find the value of sin A if tan A a half?

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what is the value of sin 75 degree

You can use your trigonometric functions (sine, cosine, and tangent).

The answer depends on what solving is required: do you need to find the area, perimeter, angles, trigonometric rations?

It depends on what information you do have. The answer may not be in radical form but in terms of a trigonometric ratio.

sin 300 = -sin 60 = -sqrt(3)/2 you can get this because using the unit circle.

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Trigonometric identities involve certain functions of one or more angles. These identities are useful whenever expressions involving trigonometric functions need to be simplified.

There are a few ways. First, there are a multitude of trigonometric tables which list the sines and cosines of a variety of values. if you now one trigonometric value of a number, you can find all the others by hand, and you can also use a Taylor series approximation to find a fairly accurate value. (In fact, many calculators use Taylor series to find trigonometric values.)

what is the value of sin 75 degree

sin 0=13/85

In a trigonometric equation, you can work to find a solution set which satisfy the given equation, so that you can move terms from one side to another in order to achieve it (or as we say we operate the same things to both sides). But in a trigonometric identity, you only can manipulate separately each side, until you can get or not the same thing to both sides, that is to conclude if the given identity is true or false.

yes we can calculate it by using trigonometric equation (by finding tan θ).

You can use them to find the sides and angles of a right triangle... just like regular trigonometric functions

I would recommend a MATH BOOK.

The trigonometric functions give ratios defined by an angle. Whenever you have an angle and a side in right triangle, you can find all the other angles and sides using the six trigonometric functions and their inverses. The link below demonstrates the relationship between functions.

It is a trigonometric equation for a right triangle, to find a non-right-angle angle. Using SOHCAHTOA, it is the opposite side divided by the adjacent angle

You can use your trigonometric functions (sine, cosine, and tangent).

If tan A = 1/2, then sin A = ? We use the Pythagorean identity 1 + cot2 A = csc2 A to find csc A, and then the reciprocal identity sin A = 1/csc A to find sin A. tan A = 1/2 (since tan A is positive, A is in the first or the third quadrant) cot A = 1/tan A = 1/(1/2) = 2 1 + cot2 A = csc2 A 1 + (2)2 = csc2 A 5 = csc2 A √5 = csc A (when A is in the first quadrant) 1/√5 = sin A √5/5 = sin A If A is in the third quadrant, then sin A = -√5/5.

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