Question 3 (Essay Worth 4 points)

Find the exact value by using a half-angle identity.

tan (7π/8)

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Step-by-step explanation:

Assume that the following are known:

The angle in question isn't very well-known. However, note that:

Since the angle is equal to , its sine and cosine can be found from the sine and cosine of using the trigonometric identities and :

Apply the tangent half-angle identity to find the tangent of :

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35x 3= 105

step-by-step explanation:

35+35= 70   70 + 35= 105

step-by-step explanation: given equation a = h(b 1+b 2)

also we are given values of a, h and b 1 as :

a = 16, h = 4, and b 1 = 3.

in order to solve it for b 2, we need to plug the given values of   a, h and b 1 .

therefore, plugging values of   a, h and b 1   in given equation, we get

16 = 4( 3 + b 2)

first dividing both sides by 4, we get

4 = 3 + b 2

subtracting 3 from both sides, we get

4 -3 = 3 -3 + b 2

1 = b 2.