3 years ago

Can some one please help me? -3x-5=16

Mathematics

2 answers:

Korolek [52]3 years ago

6 0

Answer:

x=-7

Step-by-step explanation:

Move all terms that don't contain x to the right side and solve.

OlgaM077 [116]3 years ago

3 0

Answer:

-7

Step-by-step explanation:

16 - (-5) = 21

21 / -3 = -7

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Read 2 more answers

(1+tan^2 A)cot A/cosec^2 A= tanA

Rufina [12.5K]

Answer:

see explanation

Step-by-step explanation:

Using the trigonometric identities

1 + tan²A = sec²A , secA = $\frac{1}{cosA}$ , cosecA = $\frac{1}{sinA}$ , cotA = $\frac{cosA}{sinA}$ , tanA = $\frac{sinA}{cosA}$

Consider the left side

$\frac{(1+tan^2A)cotA}{cosec^2A}$

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= $\frac{\frac{1}{cosAsinA} }{\frac{1}{sin^2A} }$

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