Please give the answer in detail.
Hi rowanwah
The sine of an angle is only applicable is a right triangle. If you just want a number, ie, the actual value of the sine 15 degrees you can look it up on Google. Do a search for "sine and cosine functions"
If you want the mathematical description of the sine of an angle it is described as follows
In a triangle ABC, there are 3 angles angle A, angle B and angle C. There are also 3 sides, Side AB, Side AC and side BC. The sine of angle A is equal to the side opposite Angle A divided by the Hypotenuse (the longest side opposite the right angle)
The Cosine of angle A is equal to the side adjacent to Angle A divided by the hypotenuse
Hope this helps Loringh PS Please leave a rating for me Thanks
Sin15 =sin(45-30) = sin45.cos30 - cos45.sin30
[ It is in the form of sin(A-B), so sin A. cosB - cosA. sinB]
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