MATHEMATICS LESSON

Formulas for Area of Triangle.

• When given two sides and the included angle,

S Area of Triangle a length of side b length of side alpha angle between a and b

Mathematics Lesson ( Unit- 304.05) Trigonometry

Arc Length and Sector Area Formulae

OBJECTIVE :

  1. Convert angular measurements

    - Define Radian

    - Convert measurements in degrees (from 0 Degree to 360 Degree) to Radian vice versa.

    - Convert multiple of  radians and vice versa.

   

 2. Deduce and use

    - The arc length formula s = rθ
    - The area of sector formula  A= 1/2 rS

 3. Apply arc length and sector area formulae to solve a range of work related problems.

Convert from degree to radian: 

=  x° x ∏/ 180°

Convert from radian o degree: 

= y rad x 180°/ ∏

naval architecture

Function of Bulkhead.
1) To prevent sinking by containing water in the compartment when shop is grounded or damage.
2) Different type of cargo can be loaded in different holds.
3) To stop the spread of fire. To prevent the fire pass to another compartment.
4) It gives strength to ship structure.