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Prove that sin+sin 90=cosine

Prove that sin+sin 90=cosine
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2. asked by Joseph Kulame
3. 30 views
In the triangle OAB, OA = a and OB= b. Show that (a-b) times (a-b) = (a times a) + (b times b) - (2 times a times b). Hence
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2. asked by Peirs
3. 585 views
What is the largest value of cosine of θ on the unit circle? What is the smallest value of cosine of θ ?(1 point) The largest
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2. 3 views
how to define arc cosine(cosine x)for -360 deg<x< 360 deg?? a proper conceptual approach to the solution will be appretiated..
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2. asked by mahima
3. 818 views
Prove that using X(t)=As in( at+¢) will produce the same results for the period for the oscillations of a mass and a spring.
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2. asked by Hana
3. 106 views
What is the largest value of cosine of θ on the unit circle? What is the smallest value of cosine of θ ?(1 point) The largest
1. 1 answer
2. 71 views
What is the largest value of cosine of θon the unit circle? What is the smallest value of cosine of θ ?(1 point) The largest
1. 1 answer
2. 83 views
How come cosine of 225 degrees is a positive number i thought it was negative because it's reference angle would be 45 degrees
1. 6 answers
2. asked by Trig
3. 700 views
Which of the following options correctly writes an equation for a cosine function, based on the given graph? (1 point) Responses
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2. 64 views
The word cosine literally means "the complement of the sine." Write a paragraph explaining how complements of sine and cosine
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2. asked by Helen
3. 711 views