Answer:
see explanation
Step-by-step explanation:
(a)
(the side required )² = sum of squares of other 2 sides - ( 2 × product of other 2 sides and cos(angle opposite side required ) )
x² = 12² + 15² - (2 × 12 × 15 × cos71°)
(b)
x² = 144 + 225 - 360cos71°
= 369 - 360cos71° ( take square root of both sides )
x = 
≈ 16 cm ( to the nearest integer )
Answer:
x = 45º
Step-by-step explanation:
well since a triangle has to equal 180º
then we just have to subtract 88º and 55º from 180º
180 - 80 - 55 = 45
therefore, x = 45
Four-Hundred and Two-Thousand, Three-Hundred and Three.
Answer:
when you divide a negative number by a negative number the quotient is always positive.when you divide two negative number then the quotient is always positive
Step-by-step explanation:
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