Question

SIND =
= // 늘
Given that 2sin e = 1,
Determine, without the use of a calculator the values of each of the following, in its simplest
form:
4.1.1
. COSE
(4)
.1.2. tan e
(2)
1.3. 2sin e + 3cos e
(3)
2. If cos 23° = 1- t», express each of the following in terms of t:
2.1. sin 230
(3)
2.2.-tan 670
.-
(2)
3. sin 67°
(2)
Simnlify the follow​

Answer 1

Answer:

Step-by-step explanation:

Let the number of cows be x and their legs be 4x.

Let the number of chicken be y and their legs be 2x.

Total number of legs = 4x + 2y.

Total number of heads = x + y.

The number of legs was 14 more than twice the number of heads.

Therefore, 2 × (x + y) + 14 = 4x + 2y.

or, 2x + 2y + 14 = 4x + 2y.

or, 2x + 14 = 4x [subtracting 2y from both sides].

or, 14 = 4x – 2x [subtracting 2x from both sides].

or, 14 = 2x.

or, x = 7 [dividing by 2 on both sides].

Therefore, the number of cows = 7.