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Mathematics, 09.06.2020 23:57 alodrascon175
HELP WITH THESE QUESTIONS PLEASEEE I WILL GIVE BRAINLIST AND 100 POINTS IVE TRIED VERY HARD AND CANT GET THE ANWSES NEED THESE DONE ASAP THANK YOU!
1.In triangle JKL, tan(b°) = three fourths and sin(b°) = three fifths. If triangle JKL is dilated by a scale factor of 3, what is cos(b°)?
triangle KL in which angle K is a right angle and angle L measures b degrees
cos(b°) = three fifths
cos(b°) = four fifths
cos(b°) = five thirds
cos(b°) = five fourths
2.If 0 < z ≤ 90 and sin(9z − 1) = cos(6z + 1), what is the value of z?
z = 3
z = 4
z = 5
z = 6
3.
Triangle BAC was dilated from triangle BDE at a scale factor of 2. What proportion proves that cos∠D = cos∠A?
Triangles BDE and BAC, in which angle B is a right angle, point D is between points B and A, and point E is between points B and C; BD measures 2 units, BE measures 3 units, and DE measures 3 and 61 hundredths units.
2 over 3 and 61 hundredths = 4 over 7 and 22 hundredths
three halves = six fourths
3 over 3 and 61 hundredths = 6 over 7 and 22 hundredths
two thirds = four sixths
IMAGES ARE IN ORDER FIRST IMAGE IS FOR QUESTION 1 SECOND IMAGE IS FOR QUESTION 3 THERE IS NO IMAGE FOR QUESTION 2
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