In a Triangle ABC,2a^2+4b^2+c^2=4ab+2ac.Find value of cosB
Answers
Answered by
2
1. Determine the constants a and b so that (-3 + 4 cos^2 x) / (1- 2sinx) = a + b sin x for all values of x (except for x values where sin(x) = 1/2, because the denominator.)
2. In the triangle ABC, 2a^2 + 4b^2 + c^2 = 4ab +2ac. Find the value of cosB.
3. In triangle ABC, (b sin C)(b cos C + c cos B) = 42. Compute the area of the triangle.
An answer and solution for any or all of these questions would be greatly appreciated. Thanks in advance. [/i]
2. In the triangle ABC, 2a^2 + 4b^2 + c^2 = 4ab +2ac. Find the value of cosB.
3. In triangle ABC, (b sin C)(b cos C + c cos B) = 42. Compute the area of the triangle.
An answer and solution for any or all of these questions would be greatly appreciated. Thanks in advance. [/i]
Answered by
4
Answer: Answer is 7/8
Step-by-step explanation: explanation is in attachment
Attachments:
Similar questions