Question

in triangle PQR, angle P and angle Q are complimentary angles.

if sin Q=4/5, cos P+cos Q=?

no idea how to work it will fan all that help

Answer 1

do you know what mean complementary angles ?

Answer 2

yes

Answer 3

so than what mean complementary angles ?

Answer 4

they add up to 90

Answer 5

yes right so than you drawn this triangle how will be ?

Answer 6

3 30 degree angles?

Answer 7

acute

Answer 8

so you know that angle R has a measure of 90 degree - yes ?

Answer 9

yes

Answer 10

bc. angle Q and angle P make together 90 degree

Answer 11

oh so it equals 90

Answer 12

hope this will help you

Answer 13

ok

Answer 14

using pythagora"s you can calculi easy the length of RQ - yes ?

Answer 15

a2+b2=c2 right

Answer 16

yes

Answer 17

i got 6.4 for the missing side

Answer 18

not is correct

16 + x^2 = 25

x^2 = 25-16

x^2 = 9

x= 3

Answer 19

yes ?

Answer 20

oh i should have know since it was bigger than the hypotenuse

Answer 21

yes so now you need to calculi these cos of angle P and angle Q - ok. ?

Answer 22

ok thank you

Answer 23

do you know what say the cos law ?

Answer 24

cos q i got 3/5 and cos p i got 4/5

Answer 25

so 1.4

Answer 26

ow nm thats wrong

Answer 27

cos q and cos p are right sure

Answer 28

so than now cos p + cos q = ?

Answer 29

how do you type it in a calculator

Answer 30

3/5 +4/5 = ?

Answer 31

1.4

Answer 32

dont need to use calculator

Answer 33

ok

Answer 34

3/5 +4/5= 7/5 = 1,4

Answer 35

ok.?

Answer 36

how many degrees is the angle?

Answer 37

what angle ?

Answer 38

oh nm sorry

Answer 39

thank you so much you were big help

Answer 40

was my pleasure

anytime

good luck

bye bye

Answer 41

bye