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hjlf
3 years ago
12

Which trigonometric ratio is incorrect

Mathematics
2 answers:
Firlakuza [10]3 years ago
6 0

Answer:

the incorrect option is

D

because tan is opposite/adjacent

Irina-Kira [14]3 years ago
3 0
The correct answer is: D
Reasons: got 100% on it
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Which equation shows the inverse property of multiplication? 4 + (-4) = 0 -8 + (-3) = -3 + (-8)
andreev551 [17]
I think it's one of the last 2 they equal the same thing, so -8+(-3) is the answer.
6 0
3 years ago
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PLZ HELP ME ASAP PLZ PLZ PLZ!!!!! I NEED LOTS OF HELP!!! I USED 40 POINTS
cupoosta [38]
First, some defintions
reciprocals are like a/b and b/a or 5/1 and 1/5

remember, \frac{\frac{a}{b}}{\frac{c}{d}}=(\frac{a}{b})(\frac{d}{c})=\frac{ad}{bc}

john's fraction is reciprocal of sarah's
john=a/b
sarah=b/a

david multiplies his by sarah and gets 12/35
(b/a)(david)=12/35

multplies his number by john and gets 12/35
(a/b)(david)=15/7

hmmm

(b/a)(david)=12/35 and
(a/b)(david)=15/7

if we divide them then we do
\frac{(\frac{b}{a})(david)}{(\frac{a}{b})(david)}=\frac{\frac{12}{35}}{\frac{15}{7}}=
\frac{\frac{b}{a}}{\frac{a}{b}}=\frac{\frac{12}{35}}{\frac{15}{7}}=
(\frac{b}{a})(\frac{b}{a})=(\frac{12}{35})(\frac{7}{15})=
\frac{b^2}{a^2}=\frac{84}{525}=
\frac{b^2}{a^2}=\frac{4}{25}
square root both sides
\frac{b}{a}=\frac{2}{5}

therefor
b=2 and a=5

john's number is a/b=5/2
sarah's number is 2/5

david, hmm

sarah times david=12/35
2/5 times david=12/35
times both sides by 5/2
david=60/70
david=6/7

check other

john times david=15/7
5/2 times 6/7=15/7
30/14=15/7
15/7=15/7
true





sarah's favorite number is 2/5
john's favorite number is 5/2
david's favorite number is 6/7
6 0
3 years ago
Brainliest!!!
Cloud [144]

Answer:

3rd option

Step-by-step explanation:

We have two kind of necks and three different colours so the andswer would be 3rd option

Crew-neck :CB,CY,CG

V-neck : VB,VY,VG

7 0
3 years ago
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What is the measure of the angle x?​
navik [9.2K]
AOB = 2 . x
2x = 60°
x = 30°
4 0
3 years ago
2/5 ÷ −13/11 ≈ pls help me pls
LenaWriter [7]

Answer: -22/65

Step-by-step explanation: PLEASE GIVE BRAINLIEST IT HElPS ALOT

8 0
3 years ago
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