3 years ago

Pls simplify n answer me please guys help

Mathematics

1 answer:

torisob [31]3 years ago

4 0

Answer:

i) 4

ii) -216

please give brainliest

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If sin(x) = 0.28, what is cos(90° - x)

vlabodo [156]

$\bf \textit{Cofunction Identities}
\\\\
sin\left(\frac{\pi}{2}-\theta\right)=cos(\theta)
\qquad 
cos\left(\frac{\pi}{2}-\theta\right)=sin(\theta)
\\\\\\
tan\left(\frac{\pi}{2}-\theta\right)=cot(\theta)\qquad 
cot\left(\frac{\pi}{2}-\theta\right)=tan(\theta)
\\\\\\
sec\left(\frac{\pi}{2}-\theta\right)=csc(\theta)\qquad 
csc\left(\frac{\pi}{2}-\theta\right)=sec(\theta)$

therefore, sin(x) = cos(90° - x).

5 0

4 years ago

Use inverse operations to solve equation 15=x/6-1

beks73 [17]

Answer:

x=90.

Step by step explanation:

To solve the expression $15=\frac{x}{6}-1$ , and obtaining a value for x we can do the following:

Add 1 both sides of the equation. This will result in $15+1=\frac{x}{6}-1+1$ ⇒ $16=\frac{x}{6}$ .
Multiply both sides by 6, which yields $15\times6=\frac{x}{6}\times6$ . This results in $90=x$ .