If cosA is not equal to 1, then sin^2A/ 1-cosA =

A) 1 + cosA

B) cosA

C) 1-cosA

D) 1

E) cosA -1

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Posts Tagged: trigonometry

# If cosA is not equal to 1, then sin^2A/(1-cosA) =

# Math1 question:In right triangle ABC in the figure above, if sin A = 0.6, what is sin B?

# In the figure above, in the measure of angle 1 is not equal to the measure of angle 4…

# Hard questions on the new SAT might look something like this

# New sample questions: Math part 9

# New sample questions: Math part 8

College Board released a bunch of sample questions this week for the new PSAT and SAT, which will make their debuts in October 2015 and March 2016, respectively. Over the next few days, I’ll be making posts working through each question, a few at a time, and commenting on them when I feel like I have (more…)

# New sample questions: Math part 6

College Board released a bunch of sample questions this week for the new PSAT and SAT, which will make their debuts in October 2015 and March 2016, respectively. Over the next few days, I’ll be making posts working through each question, a few at a time, and commenting on them when I feel like I have (more…)

If cosA is not equal to 1, then sin^2A/ 1-cosA =

A) 1 + cosA

B) cosA

C) 1-cosA

D) 1

E) cosA -1

Math1 question:

In right triangle ABC in the figure above, if sin A = 0.6, what is sin B?

A) 0.36

B) 0.40

C) 0.60

D) 0.64

E) 0.80

In the figure above, in the measure of angle1 is not equal to the measure of angle4, then the cosine of which of the following is equal to the sine of angle1? A) angle3 only

B) angle4 only

C) angle2 and 4 only

D) angle3 and 4 only

E) angle2,3,and 4

I’ll post the figure in the comments. 🙂

Even though very little information has been released to date—not even a full practice test yet!—I’m hard at work trying to get a head start on the next iteration of the Math Guide for the new SAT (coming about a year from now—March 2016). When I write questions, I have a very hard time keeping (more…)

College Board released a bunch of sample questions this week for the new PSAT and SAT, which will make their debuts in October 2015 and March 2016, respectively. Over the next few days, I’ll be making posts working through each question, a few at a time, and commenting on them when I feel like I have (more…)