3 years ago

Find the missing side. Round your answer to the nearest tenth.

Mathematics

1 answer:

nikdorinn [45]3 years ago

4 0

Answer:

$sin\left(90\right)/x=sin\left(25\right)/16$

x = 37.85

Step-by-step explanation:

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Given that a=4, b=4 and c=-2 work out b(squared) -2ac

Nimfa-mama [501]

Answer:

Step-by-step explanation:

substitute the given values of a, b and c into the expression:

b² - 2ac = 4² - (2 x 4 x -2)

= 16 - (-16)

= 16 + 16

= 32

3 0

3 years ago

Sinxcosxtanx=1-cos^2x

ycow [4]

Step-by-step explanation:

$sin x \: cos x \: tanx = 1 - {cos}^{2} x \\ LHS \\= sin x \: cos x \: tanx \\ =sin x \: cos x \: \times \frac{sin x}{cos x} \\ = sin x \: \times \frac{sin x}{1} \\ ={sin}^{2} x \\ = 1 - {cos}^{2} x \\ = RHS \\ \therefore \: sin x \: cos x \: tanx = 1 - {cos}^{2} x \\ Hence \: Proved.$