3 years ago

Click on the attachment <3 answer, please and thank you (:

Mathematics

1 answer:

natta225 [31]3 years ago

5 0

Answer:

Step-by-step explanation:

x-7=?

x=17

17-7=10

7+10=17

17=17 Correct :)

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$Construction:~Join~A,C~and~P,Q.~AC~and~BE~intersect~at~G$

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$In~right~angled~triangle~ABG,\\sinABG = \frac{AG}{AB}\\or, sin15^o = \frac{AG}{x}\\or, AG = xsin15^o=GC\\Also,~PH=HQ=xsin15^o [APHG ~and~ GHQC~ are~congruent~rectangles.]\\In~right~angled~triangle~PBH,\\ sinPBH = \frac{PH}{PB}\\ or, sinPBH = \frac{xsin15^o}{10} \\$ $Now,\\cosPBQ = cos[2(PBH)]~~~~~[$