Answer:
Therefore,
Step-by-step explanation:
Simplify
-2^3
It is read as negative 2 raised to the power three,
also it is the cube of negative 2
we know that given as
so for negative a i.e -a
substituting a = 2 we get
negative sign multiplied by odd number of times then the sign remains negative.
Therefore,
Step-by-step explanation:
<h3>Need to FinD :</h3>Here, we're asked to find out the value of (sinθ + cosθ)/(sinθ - cosθ), when 13 cosθ - 5 = 0. In order to find the solution we're gonna use trigonometric ratios to find the value of sinθ and cosθ. Let us consider, a right angled triangle, say PQR.
Where,
As we know that, 13 cosθ - 5 = 0 which is stated in the question. So, it can also be written as cosθ = 5/13. As per the cosine ratio, we know that,
Since, we know that,
So, we will find the PQ (Opposite side) in order to estimate the value of sinθ. So, by using the Pythagoras Theorem, we will find the PQ.
Therefore,
∴ Hence, the value of PQ (Opposite side) is 12. Now, in order to determine it's value, we will use the sine ratio.
Where,
Therefore,
Now, we have the values of sinθ and cosθ, that are 12/13 and 5/13 respectively. Now, finally we will find out the value of the following.
∴ Hence, the required answer is 17/7.
