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kramer
3 years ago
14

Sec x tan x (1-sin^2 x) = __x I need help solving this I have no idea.

Mathematics
1 answer:
Marat540 [252]3 years ago
4 0
Recall that secx is the reciprocal of cosx.
Also, recall the property:
cos^{2}x + sin^{2}x = 1

\therefore cos^{2}x = 1 - sin^{2}x

Thus, we can rewrite the equation as:
secx tanx (1 - sin^{2}x) = secx tanx cos^{2}x
= tanx cosx
= \frac{sinx}{cosx} \cdot cosx
= sinx
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Help please!! thanks
Elanso [62]
The answer is 110°
First, the lines AB and AD are the same, so the angles D and B are the same.
Angle B is 35°, so Angle D is 35°
The angle sum of a triangle is 180°, so if you subtract 70° from 180°, you get 110°
5 0
4 years ago
Evaluate 3+√x+7-√3x when x=9.<br> A. 7-√3<br> B. 7-3√3<br> C. 4<br> D. -2
IRISSAK [1]
The answer is going to be letter B

5 0
3 years ago
A row of plaques covers 120 square feet of space along a wall.If the plaques are 3 feet tall, what length of the wall do they co
seropon [69]

Area = Length x Width(height).

You are given the area and the width(height).

You can find the length by dividing the area by the width:


Length = 120 / 3 = 40 feet.



6 0
4 years ago
HURRY. Write a ratio for the following word phrase. Write the fraction in lowest terms.
mestny [16]

Answer:

84:2 42/1

Step-by-step explanation:

i think

hope ths helps

8 0
3 years ago
Someone plz help meeee T^T
saw5 [17]

Answer:

its D 7/6 feet

Step-by-step explanation:

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4 0
4 years ago
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