Online Trigonometry Tutoring: Homework Help
Learn Trigonometry from Certified Online Trigonometry Tutor:
Trignon means triangle and metry is to measure
What is Trigonometry?
✓ Trigonometry is a branch of mathematics that studies relationships between the sides and angles of triangles.
Where is Trigonometry used?
✓ We use it to find a missing side or angle in a triangle.
How is Trigonometry used?
Special functions are there, which are simply one side of a triangle divided by another.
Terms used in Trigonometry
✓ LEGS – the two sides of a right triangle which form the right angle.
✓ Hypotenuse is the third side which is opposite the right angle. It is always same.
✓ Theta θ is used to represent the angle.
✓ Depending on which angle we’re referring to at the time, the designations of opposite and adjacent can change.
✓ The side that doesn’t help make up the angle – opposite side
✓ The side which is always one of the sides of the angle – adjacent side
✓ They are simply one side of a triangle divided by another like the ratios that we get like Sine, Cosine and Tangent, which are often written as Sin, Cos and Tan.
We use Trigonometry to:
✓ determine the distance of the shore from sea
✓ calculate the distance between two celestial bodies
✓ represent different physical quantities such as mechanical waves, and other waves
✓ measure the heights of huge mountains and big towers
✓ used in oceanography to calculate height of tides
Problem 1. Write two applications of Trigonometry.
Problem 2. Which side of a right triangle is the opposite to the right angle?
Problem 3 . Complete it:
i. To calculate the distance between two celestial bodies
ii. To measure the heights of huge mountains and big towers.
Ans 2. Hypotenuse
Ans 3. Opposite and Adjacent
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