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Natali [406]
2 years ago
13

Evaluate the following. (iii) sin 30° + tan 40° - cosec 60° / cot 45° + cos 60° - sec 30°​

Mathematics
1 answer:
bearhunter [10]2 years ago
4 0

Sin 30 = 1/2

tan 45 = 1

Cosec 60 = 2 / √3 = 2√3 / 3

cot 45 = 1

Cos 60 = 1/2

sec 30 = 2 / √3 = 2√3 / 3

_______________________________

[ 1/2 + 1 - 2√3/3 ] ÷ [ 1 + 1/2 - 2√3/3 ] = <em>1</em>

The face and denominator of the fraction are exactly the same thus the answer is 1 .

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Step-by-step explanation:

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Simplify this exponential expression:<br><br> (-49) 2/5
ioda

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Step-by-step explanation:

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4 0
1 year ago
I need help with this .
vaieri [72.5K]
I would be glad to help you! I will solve through 3 to get you started.

This is a very important concept, so it would be helpful if you learn it on your own.

C= 2* pi* r

1. The radius is 5 cm. 5 cm represents r in the equation.
C= 2* 3.14 (or pi)* 5 
Multiply it by using a calculator. 
My answer was 31.4.

Let's try the second one.
2. The diameter is 9. Have of the diameter is the radius. 
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Plug it into the equation.
C= 2*3.14*4.5
I got 28.26

One more. 
Plug it into the equation.
C= 2*3.14*5.6
35.17 was my answer.

Make sure to add the end signs to you answer, ft, cm, meter, etc.

Let me know if you need more help.

Brainliest answer is always appreciated.
7 0
2 years ago
if triangle ABC is an isosceles triangle and triangle DBE is an equilateral triangle, find each missing measure
BabaBlast [244]

Picture?? This question is incomplete just get a picture then I can answer it



6 0
3 years ago
Is the following number rational or irrational 0.5555?
4vir4ik [10]

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Simple.

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4 0
3 years ago
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