4 years ago

Prove the identity (sina-cosatanb)/(cosa+sinatanb) = tan (a+b)

1 answer:

7 0

Sina - (cosa)(tanb)/cosa + (sina)(tanb)
sina ≡ (tana)(cosa)

(tana)(cosa) - (cosa)(tanb)/cosa + (tana)(cosa)(tanb)
= cosa(tana - tanb)/cosa(1 + tanatanb)
(cosas cancel out)
= (tana - tanb)/(1 + tanatanb) ≡ tan(a-b)

You might be interested in

5th grade math. Correct answer will be marked brainliest.

dsp73

Answer:

0.65

Step-by-step explanation: Please brainliest!

3 0

3 years ago

Read 2 more answers

Evaluate 0.65 x 280 - 2/9 of 513

kondor19780726 [428]

Answer:

181.99956681

Step-by-step explanation:

Mark as brainliest

7 0

3 years ago

HELP MUST BE DONE BY 4:00

Leya [2.2K]

Answer:

the antelope is 5280 feet the cougar is 4224 feet the hare is 4136 feet the kangaroo is 3520 feet and the coyote is 3773 feet the ostrich is 3773 feet hope this helps the answer is the antelope

8 0

3 years ago

Cedarburg's zoo has two elephants. The male elephant weighs 3 3/4 tons and the female

gtnhenbr [62]

Answer:

3.16666667 tons

Step-by-step explanation:

hope this helps have a good evening

3 0

3 years ago

20 = 9u - 7 How do you solve this

Charra [1.4K]

Answer:

U=3

Step-by-step explanation:

Since 9*3=27, and 27-7=20, U=3.

3 0

3 years ago

Read 2 more answers