I hope you are looking for these answer choices as you have not posted the choices. Therefore, I have a similar question with these answer choices.
a). tan² x - 1 = sec²x
b). 4 cosxsinx = 2cos + 1 -2sinx
c). tanx cosx cscx = 1
d). 1- tanx tany = cos(x+y) ÷ cosx cosy
<span>Options B, C, D are correct because, for all them, left-hand side equals to the right-hand side for x = 0.
The option A)
</span>tan² x - 1 = sec²x<span> is not true.
since x = 0
Therefore,
The Right hand side would be:
</span>tan² x - 1 = sec²(0)<span>
= 1
The Left hand side would be:
</span> tan² x - 1 = tan² (0) - 1
= 0 - 1
= -2
Therefore,
Both sides are not equal so it's not a trigonometric identity.
Answer:
C) A=S^2
Step-by-step explanation:
Answer:
216
Step-by-step explanation:
First find the base area
0.25 * √[(5 + 6 + 5) * (-5 + 6 + 5) * (5 - 6 + 5) * (5 + 6 - 5)] = 12
Equation:
12 * (5 + 6 + 5) + (2 * 12) = 216
Whats the mean,median,mode,range, of 6.5,7.5,7,8,8,8,9,10.5,10?
nekit [7.7K]
Mode=8
Range=4
Mean=15.2777778(rounded up to 15.28 or 15.3)
Median=8
