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Mamont248 [21]
3 years ago
5

State the exact value of tan(pi/2)

Mathematics
1 answer:
Vlad [161]3 years ago
6 0
J is between H and K.if HJ =4t -15 ,JK=5t-6, and KH=15,find JK.

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Cos4theta+cos2theta/ cos4theta-cos2theta= _____
vovangra [49]

\bf \textit{Sum to Product Identities} \\\\ cos(\alpha)+cos(\beta)=2cos\left(\cfrac{\alpha+\beta}{2}\right)cos\left(\cfrac{\alpha-\beta}{2}\right) \\\\\\ cos(\alpha)-cos(\beta)=-2sin\left(\cfrac{\alpha+\beta}{2}\right)sin\left(\cfrac{\alpha-\beta}{2}\right) \\\\[-0.35em] \rule{34em}{0.25pt}

\bf \cfrac{cos(4\theta )+cos(2\theta )}{cos(4\theta )-cos(2\theta )}\implies \cfrac{2cos\left( \frac{4\theta +2\theta }{2} \right)cos\left( \frac{4\theta -2\theta }{2} \right)}{-2sin\left( \frac{4\theta +2\theta }{2} \right)sin\left( \frac{4\theta -2\theta }{2} \right)} \implies \cfrac{cos\left( \frac{6\theta }{2} \right)cos\left( \frac{2\theta }{2} \right)}{-sin\left( \frac{6\theta }{2} \right)sin\left( \frac{2\theta }{2} \right)}

\bf \cfrac{cos(3\theta )cos(\theta )}{-sin(3\theta )sin(\theta )}\implies -\cfrac{cos(3\theta )}{sin(3\theta )}\cdot \cfrac{cos(\theta )}{sin(\theta )}\implies -cot(3\theta )cot(\theta )

8 0
3 years ago
Help me out Wishing. What are the trigonometric ratios. Write all six.
MAVERICK [17]

Answer:

Sine - opposite : hypotenuse

Cosine - adjacent : hypotenuse

Tangent - opposite : adjacent

Cosecant - hypotenuse : opposite

Secant - hypotenuse : adjacent

Cotangent - adjacent : opposite

3 0
3 years ago
Read 2 more answers
Someone please help me asap. Im giving brainliest!
Yakvenalex [24]

Answer:

C

4y=20

Hope this helped

8 0
2 years ago
Read 2 more answers
Find the value of x.<br> (x + 30)
taurus [48]

Answer:

x=55

Step-by-step explanation:

The exterior angles of a polygon add to 360.

x+x+x+x+x+x+30 = 360

Combine like terms

6x+30 = 360

Subtract 30 from each side

6x+30-30 = 360-30

6x = 330

Divide by 6

6x/6 =330/6

x =55

8 0
3 years ago
You have $200 in a savings account. Each week for 8 weeks, you take put $18 for spending money. How much money is on your accoun
IceJOKER [234]

8 * 18 = 144

200 - 144 = 56

so $56 dollars would be left in your bank account

8 0
3 years ago
Read 2 more answers
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