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3 years ago

Need help with these math problems just 1-6

Mathematics

1 answer:

geniusboy [140]3 years ago

3 0

The given :right angled triangle
:there are two equal sides
solution
1 if triangle name is ABC
then AB=AC
then triangle ABC is a isosceles triangle
then angle BAC =angle CBA =2X
and any triangle in life there angles sum =180
2x + 90 = 180
2x=180-90
2x=90
$x = \frac{90}{2}$
x=45

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Answer:

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Step-by-step explanation:

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3 years ago

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Umnica [9.8K]

Let's work on the left side first. And remember that
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Substitute for the tangent:

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Cancel the cos(a) from the top and bottom, and you're left with

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Now, work on the right side:

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Multiply that all out, using FOIL:

[ 1 + cos(a) - cos(a) - cos²(a) ]

= [ 1 - cos²(a) ] That's the right side.

Do you remember that for any angle, sin²(b) + cos²(b) = 1 ?
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So, on the right side, you could write [ sin²(a) ] .

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Allisa [31]

Answer:

Step-by-step explanation:

Given

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