sot (3)

how to find x ?

• cosine rule

• sinus rule

• heron formula

• area of triangle (1/2 ab sin c)

how to find x ?

• cosine rule

• sinus rule

• both cosine and sinus rule can be use

• heron formula

how to find AREA of this triangle ?

• cosine rule

• sinus rule

• heron formula

• area of triangle (1/2 ab sin c)

whats is the formula for sinus rule ?

• sin a / a = b / sin b

• sin a / a = sin b / b

• a / b = sin a / sin b

• a / sin b = b / sin a

formula for cosine rule

• c² = a² + c² - 2ab cos(C)

• c² = a² + b² - 2ab sin(C)

• c² = a² + b² + 2ab cos(C)

• c² = a² + b² - 2ab cos(C)