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Nikitich [7]
3 years ago
14

(sin30°+cos30°)(sin30°-cos30°)​

Mathematics
1 answer:
LUCKY_DIMON [66]3 years ago
8 0
in decimal formation it is -0.5 and in fraction -1/2
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I am having trouble finding the ratio of 2 numbers.Can someone help me?
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Kevin's bucket contains 2 1/2 gal of water. If he gives his horse 2/3 of the water, how much water does the horse get?
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ANSWER ASAP PLEASEEE
irga5000 [103]

Answer:

x = 20°

Step-by-step explanation:

Since BD = CD then Δ BCD is isosceles and its base angles are congruent, so

∠ CBD = ∠ BCD = 80° , then

∠ BDC = 180° - (80 + 80)° = 180° - 160° = 20°

∠ ADC = 180° - (80 + 60)° ← sum of angles in triangle

∠ ADC = 180° - 140° = 40° , then

∠ BDC + x = 40°

20° + x = 40° ( subtract 20° from both sides )

x = 20°

           

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3 years ago
What is 5/6 of 15 in simplest form.
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