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show that the value of cos(30) x tan(60) + sin(30) is an integer

cos(30) x tan (60) + sin (30) = (√3)/2 x √3 + 1/2 = 3/2 + 1/2 = 4/2 = 2
HP
Answered by Henry P. • Maths tutor
14561 Views

How can I find the angle between 2 vectors?

Well, basically what you need to do is apply the dot product. It is an easy process.First of all you make An element-wise multiplication of each vector. Let’s say you’ve got vector a and vector b . You multi...
IO
Answered by Ismael O. • Maths tutor
3493 Views

What was the importance of harpsichord in the Baroque era?

One of the most important musical feature of the Baroque era was the use of harpsichord. Indeed, harpsichord is a keyboard instrument, which is very similar to a piano. Some of its important features are lis...
CA
Answered by Ceren A. • Music tutor
8950 Views

y is inversely proportional to d^2. When d = 10, y = 4. d is directly proportional to x^2. When x = 2, d = 24. Find a formula for y in terms of x. Give your answer in its simplest form.

Inversely proportional means proportional to one over, so the first bit tells us y = a/d^2, where a is number we don't know yet that connects y and d. To find it we need some example values of y and d, which...
KA
Answered by Katie A. • Maths tutor
22455 Views

Factorise 3a^2 - 9a

To factorise you need to identify 'factors', which are common features, between the different terms in an equation. In 3a^2 - 9a, the first term is 3a^2 and the second term is -9a. One common feature between...
HG
Answered by Hannah G. • Maths tutor
6264 Views