Answer:
See proof below
Step-by-step explanation:
show that
sinx/1+cosx=tanx/2
From LHS
sinx/1+cosx
According to half angle
sinx = 2sinx/2 cosx/2
cosx = cos²x/2 - sin²x/2
cosx = cos²x/2 - (1- cos²x/2)
cosx = 2cos²x/2 - 1
cos x + 1 = 2cos²x/2
Substitute into the expression;
sinx/1+cosx
= (2sinx/2 cosx/2)/2cos²x/2
= sinx.2/cos x/2
Since tan x = sinx/cosx
Hence sinx/2/cos x/2 = tan x/2 (RHS)
This shows that sinx/1+cosx=tanx/2
I am pretty sure your answer is going to be 243
I hope this helps, and good luck!!
Answer:
y=-1/3x+4
Step-by-step explanation:
1/3x+y=4
y=4-1/3x
y=-1/3x+4
Answer:
<h2>10</h2>
Step-by-step explanation:
Given the expression
. To find the product of this two values, the following steps must be followed.
According to one of the law of indices, 

The product is 10
Answer: divided by 2
Step-by-step explanation: