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vodka [1.7K]
3 years ago
12

How do i verify? (1-cos^2 x)(1+tan^2 x)=tan^2 x

Mathematics
1 answer:
andre [41]3 years ago
7 0

Answer:

(1-cos^2 x)(1+tan^2 x)=tan^2 x is an identity

Step-by-step explanation:

use pictomath

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Alex787 [66]

Answer with explanation:

Presume that, initial water level to be, 0 mm, at a time t=0.

And water level is rising at the rate of 1.8 \frac{\text{mm}}{\text{year}}.

 After 6.2 years level of water will be =1.8 × 6.2

                                                           =11.16 mm

→Averge, that is increase in water level after 6.2 years is given by

                     =\frac{W_{2}-W_{1}}{t_{2}-t_{1}}\\\\=\frac{11.16-0}{6.2-0}\\\\=\frac{11.16}{6.2}\\\\=1.8 \frac{\text{mm}}{\text{year}}

→→Rate of Depreciating of water level is given by = Negative of Increase of water level=-1.8 \frac{\text{mm}}{\text{year}}

5 0
3 years ago
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Why is the simplified value of the expression below? -8*(-3)
kirill115 [55]
When you multiply two numbers which have the same sign the answer is positive. Therefore multiply eight and three to get 24 and the answer is positive; therefor the answers 24.
8 0
3 years ago
Find f (0) if f(t) = t2 – 2t – 5.
Sonbull [250]
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Explanation- Since t equals 0. You put 0 in place of every t.

0(2)- 2(0)- 5 =
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8 0
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Cos30° cos45°-sin30° sin 45°​
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Answer:

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Step-by-step explanation:

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= (√6 - √2)/4

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