Show that (90-45)=cos90 cos 45

Show that (90-45)=cos90 cos 45
1. 1 answer
2. asked by Ntando
3. 388 views
tan(180-x)sin(360-x)cos90-x)cos(-x)/sin(x-180)cos(450+x)tan(180-x)
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2. asked by shane
3. 586 views
Which of the following is a complex fourth root of -16?I got 2(cos90°+isin90°) Is it okay?
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2. asked by Narancia Ghirga
3. 649 views
Which value is equivalent to sin42∘?a. cos3∘ b. cos90∘ c. cos45∘ d. cos48∘
1. 4 answers
2. asked by GROOVE
3. 1,889 views
Find exact value of each trigometric function.tan 60 sin225 cos 135 tan 150 tan240 sin 90 cos 150 cos90
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2. asked by elodie
3. 530 views
How would I do this:-cos(90-x) I know you would use the compound angle formula and I know how to do it but when you have -cos do
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2. asked by Mandy
3. 464 views
what is the coterminal of 150 how do u figure this out??how do u so true/false: sin120cos120=sin240? is the expression
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2. asked by lorane
3. 1,069 views
Given that sin0°=cos90°, sin30°=cos60° , sin45°=cos45° , and sin90°=cos0° , what is sin60° equal to?(1 point) Responses
1. 1 answer
2. 51 views
Given △LMN and △VTU, how might the AA Similarity Theorem be used to prove ΔLMN∼ΔVTU?(1 point)Responses Show ∠L≅∠V
1. 1 answer
2. asked by e
3. 58 views
How is the interjection used in this example? Ahh. It feels so nice to sit down after a long day at work. (1 point) Responses to
1. 1 answer
2. asked by Lilac moon
3. 134 views