Question

CHALL
$05621 \frac{ { { \sqrt[ \frac{ \sqrt[ \sqrt[ \sqrt[w]{?} ]{?} ]{?} }{?} ]{?} }^{?} vft}^{?} \times \frac{?}{?} }{?}$

ii) cos 315º
1. Find the value of
i) sin 210
°
2. Find the value of
i) sin(-210°)
v) sec(-135)
3. Find the value of
ii) cos(-30°)
vi) cosec(-120°)
-TC
-Зл
i) sin​

Answer 1

Answer:

The given polynomial is 2x3 - 15x2 + 37x - 30.

Since the roots of the polynomial are in AP, so let the roots be a - d, a, a + d.

Now, using the relation between zeroes and the coefficients of the given cubic polynomial, we have:

Sum of roots = a - d + a + a + d = - (-15)/ 2 = 15/ 2

So, 3a = 15/ 2

a = 5/ 2 = 2.5

Now, product of roots = (a - d) (a) (a + d) = -(-30)/ 2 = 15

2.5(a2 - d2) = 15

(2.5)2 - d2 = 6

d2 = 0.25

d = 0.5

Thus, the zeroes of the given polynomial are 2, 2.5, and 3.

Step-by-step explanation:

hope it helps you

Answer 2

Step-by-step explanation:

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