You can use the sum and difference identities which for cosine is cos(a+b)= cosacosb-sinasinb
Answer:
The given equation is NOT justified.
Step-by-step explanation:
Here, the given equation is 
= 
Now, here Consider the left hand side and simplifying the left side by operating on the like terms,
⇒ = 
=
Here, Left side of equation ≠ Right side of the equation
Hence, ≠
Answer:
x-intercept=(-1,0) y-intercept =(0,-3)
Step-by-step explanation:
By using simple rule of three, a period of 9.5 years on Venus is equivalent to 2134.65 terrestrial days.
<h3>How many terrestrial days are equivalent time in Venus?</h3>
One year on Earth is equivalent to 365.3 days and one year on Venus is equivalent to 224.7 days, the equivalent terrestrial time of 9.5 years on Venus is found by simple rule of three:
x = 9.5 yr × (224.7 days / 1 yr)
x = 2134.65 days
A period of 9.5 years on Venus is equivalent to 2134.65 terrestrial days.
To learn more on simple rule of three: brainly.com/question/15209325
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