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4 years ago

What value of 0 makes sin0=cos60 a true statement?

Mathematics

1 answer:

timama [110]4 years ago

4 0

Answer:

Step-by-step explanation:

Using the co function identity

sin x = cos(90 - x) = cos(90 - 30) = cos60° ← x = 30°, thus

sin30° = cos60°

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I’m kinda confused. Can someone help.

horsena [70]

Answer:

PQ = $PM\cos MPQ + MQ\cos MQP=2PM\cos MQP$

Step-by-step explanation:

given MQR = 60, PQR = 75

MQP = 75 -60= 15 $QR = ((18(1+\cos 30))^{2}-(2\cos 15)^{2})^{\frac{1}{2}}$

WE KNOW THAT MQR +QRM +QMR = 180

MPQ = MQP AS ANGLE OPPOSITE TO EQUAL SIDES ARE EQUAL

THEREFORE QMR = 90 - 60 = 30

therefore PQM = 75 - 60 = 15

PM = PQ because M is the mid point

therefore PR = PM + $MQ\cos QMR$

PR = $18(1+\cos 30)$

$QR = (PR^{2}-PQ^{2}))^{\frac{1}{2}}$

PQ = $PM\cos MPQ + MQ\cos MQP=2PM\cos MQP$

5 0

3 years ago

100 decreased by twice the sum of d and 5

QveST [7]

100 - (5+d)×2

That's what my teacher told me.

7 0

4 years ago

A painter needs 5 gallons of paint to finish a house. He has 3 quarts and 1 pint. How much more paint does he need?

NARA [144]

Answer:One pint and 16 quarts or one pint and four gallons

Step-by-step explanation:there are two pints in a quart and there are 4 quarts in a gallon.

3 0

3 years ago

Read 2 more answers

Evaluate the following question <br> PLZ

kozerog [31]

Answer:

1599995904

Step-by-step explanation:

first, you must do the top part of the fraction. you can start by doing the power numbers such as 2 power 4, 4 power 6 and 4 power 4.

the complete answer for the top part is: 12x 16x 4069x 8x 2x 256 which equals: 3199991808

then, you must divide by 2 which gives you the answer of: 1599995904

8 0

3 years ago

What is best buy £3.99 5kg or 3.2kg £2. 60?

VLD [36.1K]

Answer:

I would say 5 kg because you get more kg with a little bit more money added

6 0

3 years ago