Given:

To find:
The exact value of cos 15°.
Solution:

Using half-angle identity:


Using the trigonometric identity: 

Let us first solve the fraction in the numerator.

Using fraction rule: 

Apply radical rule: ![\sqrt[n]{\frac{a}{b}}=\frac{\sqrt[n]{a}}{\sqrt[n]{b}}](https://tex.z-dn.net/?f=%5Csqrt%5Bn%5D%7B%5Cfrac%7Ba%7D%7Bb%7D%7D%3D%5Cfrac%7B%5Csqrt%5Bn%5D%7Ba%7D%7D%7B%5Csqrt%5Bn%5D%7Bb%7D%7D)

Using
:


Answer: 0.84
Step-by-step explanation: It passes the vibe check
Answer:
1 tablet
Step-by-step explanation:
Data provided in the question:
The dose of the Uniphyl = 5 mg/kg
Strength of the Uniphyl = 400 mg per tablet
Weight of the patient = 76 kg
Now,
The recommended dose for the patient
= Dose of the Uniphyl × weight of the patient
= 5 mg/kg × 76 kg
= 380 mg
Therefore,
The number of tablets to be administered to the patient
=
=
= 0.95 ≈ 1 tablet
Hence,
The number of tablets to be administered to the patient is 1