Suppose we have $$\triangle ABC$$. Heron's formula can be used to find area of such a triangle. According to Heron's formula, we have … [Continue reading]
How to find all the 3 angles of triangle given all 3 sides of triangle? Applying Cosine Law Pre calculus Grade 11
We need to use cosine law in order to find all the angles if we are given with all the sides. … [Continue reading]
Vertex of Quadratic Functions Grade 11 Precalculus
We have already drawn the most basic form of quadratic function which is $$y=x^2$$ in the post https://mathinstructor.net/2018/07/quadratic-functions-pre-calculus-grade-11-post-2/. What is the vertex of such a quadratic function? … [Continue reading]
How to find y intercept of quadratic functions?
What is the meaning of y-intercept? y-intercept is the point where graph cuts y-axis which means x-value at that point is equal to 0. … [Continue reading]
Vertex form of Quadratic Functions Pre-calculus grade 11
Vertex form of Quadratic Functions is $$y=a(x-p)^2+q$$. It tells a lot about quadratic function. … [Continue reading]
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