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Anna [14]
3 years ago
14

Help me to do this question plz plz plz plz ​

Mathematics
1 answer:
Andrew [12]3 years ago
7 0

Answer:

2) 90-62=28°

3) 180-108=72°

4) 180-89=91°

please mark as brainliest

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Step-by-step explanation:

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3 years ago
Can you please answer this question
tamaranim1 [39]
3tan^{2} \theta +7sec\theta=3
First I converted the equation terms into sine and cosine.
tan^{2}\theta = \frac{sin^{2}\theta}{cos^{2}\theta} and sec\theta= \frac{1}{cos\theta}
Substitution:
\frac{3sin^2\theta}{cos^2\theta} + \frac{7}{cos\theta} =3
Common Denominator Created:
\frac{3sin^2\theta}{cos^2\theta} + \frac{7cos\theta}{cos^2\theta} =3
Multiply each term by the LCD:
3sin^2\theta+7cos\theta=3cos^2\theta
Substitution: Recall ⇒sin^2\theta =1-cos^2\theta 
3(1-cos^2\theta)+7cos\theta=3cos^2\theta
Distribute and collect all terms on one side:
6cos^2\theta-7cos\theta-3=0
Factor and set each factor equal to 0:
(2cos\theta-3)(3cos\theta+1)=0
2cos\theta-3=0⇒theta=cos^{-1} \frac{3}{2}
3cos\theta+1=0⇒theta=cos^{-1} \frac{-1}{3}
The 2nd factor provides only possible answer 109.5 degrees

4 0
4 years ago
My teacher says b is wrong
Alex Ar [27]
It is wrong c is the correct answer I think
7 0
4 years ago
What is the answer to this 584,405÷884
I am Lyosha [343]

Theirs your answer 661.091628959

6 0
3 years ago
Read 2 more answers
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