A recipe calls for 4 sliced apples. You cut the apples into thirds. How many pieces of apple do you have? A) 3 pieces B) 6 piece
3 answers:
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Step-by-step explanation:
A right triangle is a triangle in which one of the angles is a 90∘ angle.
Since None of the angels is 90° , so the triangle is not a right triangle.
Given:
To find:
The exact value of cos 15°.
Solution:
Using half-angle identity:
Using the trigonometric identity:
Let us first solve the fraction in the numerator.
Using fraction rule:
Apply radical rule:
Using :
