Answer:
-3
Step-by-step explanation:
In the attached image we can see the tan(x/2) relation with sine and cosine
tan(x/2)=sinx/(1+cosx)
sinx=-3/5
and from the triangle we can see that the cosine is equal to -4/5 (this triangle is also called a notable triangle of sides 3,4,5 in lenght)
tan(x/2)=(-3/5)/(1-4/5)
tan(x/2)=-3
The expression in radical form is
In order to express the given indices expression in radical form, we need to ensure there is a square root present in the resulting expression.
According to the law of indices,
Given the indices
Comparing with the general formula, we will see that:
m = 3
n = 7
a =
Applying the law of indices:
Hence the expression in radical form is
Learn more here: brainly.com/question/6755932
Answer:
△PQR and △RST are not similar.
Step-by-step explanation:
In triangle △PQR, two known interior angles are 34° and 80°. So the measure of third angle is
In triangle △RST, two known interior angles are 24° and 90°.
Two triangles are similar if their corresponding angles are same and the corresponding sides are proportional.
Since the angles of △PQR and △RST are not same, therefore we can say that the △PQR and △RST are not similar.
